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Potassium   /pətˈæsiəm/   Listen
Potassium

noun
1.
A light soft silver-white metallic element of the alkali metal group; oxidizes rapidly in air and reacts violently with water; is abundant in nature in combined forms occurring in sea water and in carnallite and kainite and sylvite.  Synonyms: atomic number 19, K.



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"Potassium" Quotes from Famous Books



... or access to, a genuine finger-print. Of this finger-print a photograph is taken, or rather, a photographic negative, which for this purpose requires to be taken on a reversed plate, and the negative is put into a special printing frame, with a plate of gelatine which has been treated with potassium bichromate, and the ...
— The Red Thumb Mark • R. Austin Freeman

... Nothing easier to do by means of chlorate of potash and caustic potash. The former is a salt which appears under the form of white crystals; when heated to a temperature of 400 deg. it is transformed into chlorine of potassium, and the oxygen which it contains is given off freely. Now 18 lbs. of chlorate of potash give 7 lbs of oxygen—that is to say, the quantity necessary to the travellers for ...
— The Moon-Voyage • Jules Verne

... making the trial, and if the services of someone capable of giving the injections can be secured, the treatment is certainly worth the trial. The immediate injection into the tissues around the wound of a one-per-cent. watery solution of chromic acid or potassium permanganate is thought to be of value by destroying the poison, but in order to be efficient it must be administered within a short time after the bite has been received. Should the patient's condition become serious, and the ...
— Health on the Farm - A Manual of Rural Sanitation and Hygiene • H. F. Harris

... the azo group .N:N. is united with an aromatic radical on the one hand, and with a radical of the aliphatic series on the other. The most easily obtained mixed azo compounds are those formed by the union of a diazonium salt with the potassium or sodium salt of a nitroparaffin (V. Meyer, Ber., 1876, ...
— Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 1 - "Austria, Lower" to "Bacon" • Various

... writing is invisible when dry," he hurried on. "I will just make a few scratches on this fourth sheet of paper—so. It leaves no mark. But it has the remarkable property of becoming red in vapor of sulpho-cyanide. Here is a long-necked flask of the gas, made by sulphuric acid acting on potassium sulpho-cyanide. Keep back, Dr. Waterworth, for it would be very dangerous for you to get even a whiff of this in your condition. Ah! See—the scratches I made ...
— Master Tales of Mystery, Volume 3 • Collected and Arranged by Francis J. Reynolds

... them, Colonel Fergusson himself, Fleeming Jenkin, and Andrew Wilson, the Christian Buddhist and author of THE ABODE OF SNOW. Before these learned pundits, one member laid the following ingenious problem: "What would be the result of putting a pound of potassium in a pot of porter?" "I should think there would be a number of interesting bi-products," said a smatterer at my elbow; but for me the tale itself has a bi-product, and stands as a type of much that is most human. ...
— Across The Plains • Robert Louis Stevenson

... The temperature must be neither too high, nor too low. Suitable and sufficient nutrient material also for the ferment germ must be present; that is a proper proportion of nitrogenous matter, together with certain inorganic salts, which may be added in the form of a little ammonium phosphate and potassium tartrate. ...
— The Production of Vinegar from Honey • Gerard W Bancks

... difficulty is that the stragglers, organized under fantastic names in pretentious associations, or lurking in solitary dens behind doors left ajar, make no real contributions to the art of healing. When they bring forward a remedial agent like chloral, like the bromide of potassium, like ether, used as an anesthetic, they will find no ...
— The Autocrat of the Breakfast-Table • Oliver Wendell Holmes, Sr. (The Physician and Poet not the Jurist)

... degree is not altogether satisfactory; but apart from this the necessity of maintaining such low temperatures, far below that of the coldest winter's night, renders the idea wholly inadmissible for all domestic installations. Willgerodt suggested removing sulphuretted hydrogen by means of potassium hydroxide (caustic potash), then absorbing the phosphine in bromine water. For many reasons this process is only practicable in the laboratory. Berge and Reychler proposed extracting both sulphuretted hydrogen and phosphine ...
— Acetylene, The Principles Of Its Generation And Use • F. H. Leeds and W. J. Atkinson Butterfield

... torpedoes, submarine batteries; or thinking of probable nitre caves, of the possible gathering of copper from old distilleries, of the scraping saltpetre from cellars, of how to get tin, of how to get chlorate of potassium, of how to get gutta-percha, of how to get paper, of how to get salt for the country at large; or he was running sawmills, building tanneries, felling oak and gum for artillery carriages, working old iron furnaces, working lead mines, busy ...
— The Long Roll • Mary Johnston

... drop at the bottom of that vessel. I have here a chemical substance, discovered by Sir Humphrey Davy, which has a very energetic action upon water, which I shall use as a test of the presence of water. If I take a little piece of it—it is called potassium, as coming from potash,—if I take a little piece of it, and throw it into that basin, you see how it shews the presence of water by lighting up and floating about, burning with a violent flame. I am now going to take away the candle ...
— The Chemical History Of A Candle • Michael Faraday

... illustrate the caviler attitude toward environment and health in 1913. These projects involve items such as gunpowder, acetylene, hydrogen, lead, mercury, sulfuric acid, nitric acid, cadmium, potassium sulfate, potassium cyanide, potassium ferrocyanide, copper sulfate, and hydrochloric acid. Several involve the construction of hazardous electrical devices. Please view these as snapshots of culture and attitude, not as ...
— The Boy Mechanic: Volume 1 - 700 Things For Boys To Do • Popular Mechanics

... come from consulting my medical man, for I can no longer get any sleep. He found that my pulse was high, my eyes dilated, my nerves highly strung, but no alarming symptoms. I must have a course of shower baths and of bromide of potassium. ...
— Selected Writings of Guy de Maupassant • Guy de Maupassant

... state at the present time that fertile soils should contain at least the following twenty elements: Nitrogen, phosphorus, potassium, calcium, magnesium, sulphur, hydrogen, carbon, oxygen, iron, sodium, chlorine, aluminum, silicon, manganese, copper, zinc, boron, ...
— Northern Nut Growers Association Report of the Proceedings at the Thirty-Seventh Annual Report • Various

... superstition of the succubus. I must try some bromo-exorcism. Tonight I will swallow a gram of bromide of potassium. That will make my senses ...
— La-bas • J. K. Huysmans

... border of the foot, and the balls and tips of the toes. In flat-foot the medial border appears in the print to a greater or less extent (Fig. 154). If a record is wanted to estimate the progress of treatment, the sole of the foot is painted with a 5 per cent. solution of ferro-cyanide of potassium, and the patient stands on paper painted with the liquor of the perchloride of iron diluted one-half; the print appears dark ...
— Manual of Surgery Volume Second: Extremities—Head—Neck. Sixth Edition. • Alexander Miles

... late, during the long and still watches of the night, while he stared at the ceiling, or counted the hours that must pass before his next dose of bromide of potassium, a new turn had been ...
— The Pit • Frank Norris

... best orthochromatic effects made through this tank is with a three-grains-to-the-ounce solution of bichromatic of ammonia or bichromate of potassium. In this method there is no preparation used on the plate. A common rapid dry plate is exposed through this solution; the exposure, however, is about twenty times longer than it would be if you removed the tank with the yellow solution, or, in other words, if a dry-plate ...
— Scientific American Supplement, No. 711, August 17, 1889 • Various

... method of securing a calotype paper negative for a few days or a week, in cases where it may be difficult, from lack of conveniences during that time, to use hyposulph., with its consequent washings, &c.? Some, I believe, recommend bromide of potassium; some, the iodide; others, common salt: but I should like to know which is considered the best; what strength, and how applied. Also, whether any subsequent treatment is necessary previous to the final application of ...
— Notes and Queries, Number 183, April 30, 1853 • Various

... latch-key of the street-door, he went to his chemist's in Dover Street and bought some potassium bromide and sal volatile. When he came back Marthe whispered ...
— The Pretty Lady • Arnold E. Bennett

... of burning and aids the mixture in sticking to the leaves well. If one is sure that he has at least as much lime, or an excess of lime, it will not be necessary to test the mixture, but if he is not, a simple test may be made with ferro-cyanide of potassium, obtained at a drug store. A few drops of this mixture will disappear if the lime is equal or in excess of the copper sulphate, that is, it will be neutralized, but if it is not, they will remain a bright purplish red. Bordeaux mixture is used in strengths varying from ...
— Apple Growing • M. C. Burritt

... the Greek, answering her thought. 'I did not kill him, poor devil! He did it himself, out of fright, I think. So that side of the affair ends. He had some sealed glass capsules of hydrocyanide of potassium in little brass tubes, sewn up in the lining of a waistcoat, and he took one, and must have died instantly. I believe the stuff turns into prussic acid, or something of that sort, when ...
— The Primadonna • F. Marion Crawford

... impudence of which remark needs no comment. The planners of the crime had indeed Intended to bury their traces, as they supplied the wretched boys each with a tube of cyanide of potassium, which he was to take immediately after doing the deed. An Instruction they ...
— Twenty Years Of Balkan Tangle • Durham M. Edith

... chloroform, or potassium cyanide, or drowned. It may also be readily suffocated with house-hold gas. It should be killed immediately before use, as otherwise the gastric juice attacks the wall of the stomach, and the dissection is, in consequence, rendered extremely disagreeable. A very young rabbit is ...
— Text Book of Biology, Part 1: Vertebrata • H. G. Wells

... metal, present in clay, bauxite, and a variety of other mineral substances, is electrolytically deposited from a bath of alumina obtained by dissolving bauxite either in potassium fluoride or in cryolite. Aluminium is now coming into extended use in the construction of long-distance electric ...
— Beacon Lights of History, Volume XIV • John Lord

... excellent. Some of 'em, maybe, wouldn't hold a charge more than an hour, while others would have a shelf-life, fully charged, of as much as a year. Batteries don't work according to theory. If they did, potassium chlorate would be a better depolarizer than manganese dioxide, instead of the other way around. What you get out of a voltaic cell depends on the composition and strength of the electrolyte, the kind of depolarizer used, the shape of the electrodes, the kind ...
— With No Strings Attached • Gordon Randall Garrett (AKA David Gordon)

... arteriosclerosis, certain forms of diabetes and albuminuria, are due, on the one hand, to the excessive use of acid-producing foods, and on the other hand, to a deficiency in the blood of certain alkaline mineral elements, especially sodium, magnesium and potassium, whose office it is to neutralize and eliminate the acids which are created and liberated in the processes of starchy and ...
— Nature Cure • Henry Lindlahr

... "You needn't read. Your lawyer may be interested to add this to the statement, however. A pistol that has been shot off has potassium sulphide from the powder in the barrel. Later, it oxidizes and iron oxide is found. This weapon has neither the sulphide nor the oxide, as far as I can determine. It has never even been discharged. No, it was not the pistol found on Forbes that ...
— Guy Garrick • Arthur B. Reeve

... old. I like to read YOUNG PEOPLE. The Post-office Box letters are nice. Katie R. P. says she collects insects. So does my papa. He puts lumps of cyanide of potassium, bought at the druggist's, in a bottle, and mixes plaster of Paris with water until it is like dough, and then pours it over the potassium. When it dries, the bottle is ready for use. Five cents' worth lasts a season, ...
— Harper's Young People, June 1, 1880 - An Illustrated Weekly • Various

... something else—another form of a something, which seems to make phosphorus, iodine, bromine, and certain other substances: and as for hydrogen—I know as little about it. I don't know but what all the metals, gold, silver, iron, tin, sodium, potassium, and so forth, are not different forms of hydrogen, or of something else which is the parent of hydrogen. In fact, I know but very little about the matter; except this, that I do know very little; and that the more I experiment, and the more ...
— Scientific Essays and Lectures • Charles Kingsley

... well-known fact that the liquid content of the cells of plants contain numerous inorganic substances in solution. Among these, not considering oxygen, hydrogen, nitrogen and carbon dioxide, there are the salts of calcium, magnesium, potassium, iron, sulphur and phosphorus. The above substances are found in the cells of every living plant. Other substances like salts of sodium and silica are also found, but these are not regarded as essential to the life and growth of plants. They appear to be present because ...
— Popular Science Monthly Volume 86

... of the neutral carbohydrate, cholesterine, with other similar bodies. The wool perspiration may be removed by a simple washing with water, and on the Continent forms a valuable source of potash salts, since the ash after ignition contains 70 to 90 per cent. of potassium carbonate. The wool fat is insoluble in water, but dissolves readily in ether, ...
— The Dyeing of Woollen Fabrics • Franklin Beech

... clumping power of an ion rises very rapidly with its valency; that is with the number of unit charges associated with it. Thus diads such as magnesium, calcium, barium, etc., are very much more efficient than monads such as sodium, potassium, etc., and again, triads such as aluminium are, similarly, very much more powerful than diad atoms. Here, in short, we have arrived at the active cause of ...
— The Birth-Time of the World and Other Scientific Essays • J. (John) Joly

... are especially valuable for the mineral salts they contain, chief among which are lime, phosphorus, sulphur, iron, potassium, and sodium. For this reason, the addition of eggs to any kind of diet supplies a large amount of the minerals that are needed for bone, blood, and tissue building. A favorable point concerning the minerals found in eggs is that they are not affected to any extent by cooking. ...
— Woman's Institute Library of Cookery, Vol. 2 - Volume 2: Milk, Butter and Cheese; Eggs; Vegetables • Woman's Institute of Domestic Arts and Sciences

... in it the promise and the germ of mind. May we not then draw the inference that the elements of mind are present in those chemical elements—carbon, oxygen, hydrogen, nitrogen, sulphur, phosphorus, sodium, potassium, chlorine—that are found in the cell. Not only must we do so, but we must go further, since we know that each of these elements, and every other, is built up out of one invariable unit, the electron, and we must therefore assert that Mind is potential in the unit of Matter—the electron itself... ...
— A Series of Lessons in Gnani Yoga • Yogi Ramacharaka

... that once a week (except of course, during the cold weather), it is a good plan to give the woodwork that the dog comes in contact with a good sprinkling with a watering pot with a solution of permanganate of potassium, using a tablespoonful of the crystals dissolved in a quart of hot water. It costs at wholesale fifty cents per pound, and is the best disinfectant I have ever used. Unless the kennels are kept scrupulously clean the dogs' eyes, especially the puppies, are liable to become seriously inflamed. ...
— The Boston Terrier and All About It - A Practical, Scientific, and Up to Date Guide to the Breeding of the American Dog • Edward Axtell

... the girl who dropped the sulphuric acid into the something of potassium? I nearly made a great discovery ...
— Roden's Corner • Henry Seton Merriman

... principal materials that produce flourishment are carbon, hydrogen, oxygen, phosphorus, potassium, nitrogen, sulphur, calcium, iron and magnesium; protoplasm contains everything; chemists have not been able to determine and classify protoplasm. ...
— ABC's of Science • Charles Oliver

... man. I met him several times, and he observed to a mutual friend that I was evidently suffering seriously from threatening nervous symptoms, and that he would like to attend me. He did so, and gave me daily a teaspoonful of bromide of potassium. This gave me sleep and appetite; but, after some weeks or months, the result was a settled, mild melancholy and tendency to rest. In fact, it was nearly eighteen months before I recovered so that I could write or work, ...
— Memoirs • Charles Godfrey Leland

... nasturtiums, cabbage, peppergrass, water-cress, mustards, and horseradish - by no means protects them from preying worms and caterpillars; but ants, the worst pilferers of nectar extant, let them alone. Authorities declare that the chloride of potassium and iodine these plants contain increase their ...
— Wild Flowers, An Aid to Knowledge of Our Wild Flowers and - Their Insect Visitors - - Title: Nature's Garden • Neltje Blanchan

... observed, and they are due to the same cause, in other solutions; as when we infuse our tea or sweeten it with sugar. The attraction of water, or one of its elements rather, for other substances, sometimes shows itself in vehement forms. When a piece of potassium, for example, is thrown into a vessel of water, its attraction for the water is such, and of the water for it, that it instantly takes fire, and the two blaze away, particle violently seizing on particle until the elements of the water unite part ...
— Lectures on Popular and Scientific Subjects • John Sutherland Sinclair, Earl of Caithness

... The story made an immediate impression, and the remote little world by the Golden Gate was shaken into startled and enquiring astonishment. Wherever people met, The Case of Summerfield was on men's tongues. Was Caxton's contention possible? Was it true that, by the use of potassium, water could be set on fire, and that any one possessing this baneful secret could destroy the world? The plausibility with which the idea was presented, the bare directness of the style, added to its convincing power. It sounded too real to be invention, was told with too frank a simplicity to ...
— The Case of Summerfield • William Henry Rhodes

... also take a douche once a day—the douche may consist of two quarts of water in which has been dissolved a teaspoonful of common table salt, or a tablespoonful of borax or boric acid. Such things like alum, potassium permanganate, carbolic acid, lactic acid, or tincture of iodine should only be used when there is leucorrhea present and generally only under a physician's directions. Bathing is permissible, but it is safe to use only a lukewarm ...
— Woman - Her Sex and Love Life • William J. Robinson

... fed with phosphorus and carbon, and the alkalies and silex. Let her decompose them, analyze them, torture them in all the ways she knows. The net result of each is a little sugar, a little fibrin, a little water—carbon, potassium, sodium, and the like—one cares not to ...
— Morals and Dogma of the Ancient and Accepted Scottish Rite of Freemasonry • Albert Pike

... of me some of the finest destructive agents you could wish to light upon—carbon-monoxide, chlorine-trioxide, mercuric-oxide, conine, potassamide, potassium-carboxide, cyanogen—when Edwards entered. I was wearing a mask of my own invention, a thing that covered ears and head and everything, something like a diver's helmet—I was dealing with gases a sniff of which meant death; only a few days before, unmasked, I had been doing some ...
— The Beetle - A Mystery • Richard Marsh

... gray hair to its natural color, said to be very effective when the hair is changing color, is as follows: One pint of water, one ounce tincture of acetate of iron, half an ounce of glycerine, and five grains sulphuret potassium. Mix and let the bottle stand open until the smell of the potassium has disappeared, then add a few drops of ottar of roses. Rub a little into the hair daily, and it will restore its color ...
— Our Deportment - Or the Manners, Conduct and Dress of the Most Refined Society • John H. Young

... the definitions given above includes the sodium and potassium salts of rosin, commonly called rosin soap, for the acid constituents of rosin have been shown to be aromatic, but in view of the analogous properties of these resinates to true soap, they are generally regarded as legitimate constituents of soap, having been used in Great Britain since 1827, ...
— The Handbook of Soap Manufacture • W. H. Simmons

... be found to flow very evenly smoothly over the plate; is tough, intense, and structureless in appearance. I have not yet determined what is the best iodizing mixture, but at present I prefer iodide of potassium alone, if pure, and twenty grains to the ounce of alcohol is the proportion I generally adopt; thus having five grains in each ...
— Notes and Queries, Number 235, April 29, 1854 • Various

... salts of chloric acid; they are all solids, soluble in water, the least soluble being the potassium salt. They may be prepared by dissolving or suspending a metallic oxide or hydroxide in water and saturating the solution with chlorine; by double decomposition; or by neutralizing a solution of chloric acid ...
— Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 3 - "Chitral" to "Cincinnati" • Various

... stopping them, a little gamboge neatly applied with a camel-hair pencil. Where a great intensity is desired, Indian ink may be applied in the same manner, taking care in both cases to smooth off the edges with a dry brush. The cyanide of potassium applied in the same way, but with very great care, will remove the black spots. Before it appears to have quite accomplished its object, a negative should be immersed in water, as its ...
— Notes and Queries, Number 215, December 10, 1853 • Various

... minutes, depending on the sensitiveness of the plates. The instrument is then removed to the dark room, and the plates developed by immersing them all at once in a solution consisting of four parts potassium oxalate and one part ferrous sulphate. After ten minutes they are removed, fixed, and dried. Their readings are then noted, and compared with those obtained with the silver chloride. The chloride experiment is again performed ...
— Scientific American Supplement, No. 520, December 19, 1885 • Various

... present day, with that which existed forty years ago. If we consider the knowledge positively acquired, in this short time, of the modus operandi of urari, of atropia, of physostigmin, of veratria, of casca, of strychnia, of bromide of potassium, of phosphorus, there can surely be no ground for doubting that, sooner or later, the pharmacologist will supply the physician with the means of affecting, in any desired sense, the functions of any physiological element of the body. It will, in short, become possible ...
— Science & Education • Thomas H. Huxley

... greater believer in what the theater people call 'atmosphere.' Some of your facts, Mr. Ingerman, remind me of an expert's report in a mining prospectus. When tested by cyanide of potassium the gold in the ore often changes into iron pyrites. But don't hug the delusion that I shall neglect Steynholme. The murderer is there, not in London, and, unless my intellect is failing, he will be tried ...
— The Postmaster's Daughter • Louis Tracy

... under the microscope with the stage removed, and with a micrometer eye-piece so adjusted that each division equalled 1/500 inch; the plants were illuminated by light passing through a solution of bichromate of potassium so as to eliminate heliotropism. Under these circumstances it was interesting to observe how rapidly the circumnutating apex of a cotyledon passed across the divisions of the micrometer. Whilst travelling in any direction ...
— The Power of Movement in Plants • Charles Darwin

... of thallium paper for estimating approximately the oxidizing material in the atmosphere, whether it be hydrogen peroxide alone, or mixed with ozone, or perhaps also with other constituents hitherto unknown. The objection to Schnbein's ozonometer (potassium iodide on starch paper) and to Houzeau's ozonometer (potassium iodide on red litmus paper) lies in the fact that their materials are hygroscopic, and their indications vary widely with the moisture ...
— Scientific American Supplement No. 275 • Various

... phosphorus—ordinary phosphorus will not answer—and pour a little liquid air on it, stirring it gently, as you see. Now, if I should let that dry it would explode at the slightest touch; but we do not want that, and we wish to increase its power, so we add a little chloride of potassium; now watch it dry—see the color change to a light red-brown. There, if you should strike that or put fire to it, it would wreck this building as completely as if you had exploded fifty pounds of ...
— Montezuma's Castle and Other Weird Tales • Charles B. Cory

... Dara's a heavy-metals planet. There aren't many light elements in our soil. Potassium is scarce. So our ground isn't very fertile. Before the Plague we traded heavy metals and manufactures for imports of food and potash. But since the Plague we've had no off-planet ...
— Pariah Planet • Murray Leinster

... partially disintegrated, etched as it were, besides being caused to stand out. A weaker acid ought to be used, or more mercury and less acid. As we shall afterwards see, another dangerous agent, if not carefully used, is bichrome (bichromate of potassium), which is also liable to roughen and injure the fibre, and thus interfere with the final production of a ...
— The Chemistry of Hat Manufacturing - Lectures Delivered Before the Hat Manufacturers' Association • Watson Smith

... in the Pharmacopoeia has been tried, the drugs now generally used being sodium, potassium ...
— Epilepsy, Hysteria, and Neurasthenia • Isaac G. Briggs

... of bismuth thin cylinders of iron, of magnetic slate, of sulphate of iron, carbonate of iron, protochloride of iron, red ferrocyanide of potassium, and other magnetic bodies, it was found that when the position of the magnetic cylinders was the same as that of the cylinders of bismuth, the deflection produced by the former was always opposed in direction to that produced by the latter; and hence the disposition ...
— Fragments of science, V. 1-2 • John Tyndall

... threat is cesium-137, a gamma emitter with a half-life of 30 years. It is a major source of radiation in nuclear fallout, and since it parallels potassium chemistry, it is readily taken into the blood of animals and men and may ...
— Worldwide Effects of Nuclear War: Some Perspectives • United States Arms Control and Disarmament Agency

... of silver, the stain of which may be removed by first soaking in a solution of common salt, and afterward washing with ammonia. Or use solution of ten grains of cyanide of potassium and five grains of iodine to one ounce of water, or a solution of eight parts each bichloride of mercury and chloride of ammonium in one hundred and twenty-five ...
— The Whitehouse Cookbook (1887) - The Whole Comprising A Comprehensive Cyclopedia Of Information For - The Home • Mrs. F.L. Gillette

... to projectiles a velocity four times superior to that of gunpowder. I will even add, that if we mix it with one-eighth of its own weight of nitrate of potassium, its expansive force ...
— Jules Verne's Classic Books • Jules Verne

... the constituents of the ash, potassium is by far the most abundant—the oxide averaging about 50 per cent. of the total ash. Phosphoric acid stands next to potassium in abundance and importance, constituting, on an average, about one-third of the entire ash. Oxides of manganese and iron are always present; ...
— Studies of American Fungi. Mushrooms, Edible, Poisonous, etc. • George Francis Atkinson

... always and invariably composed of two atoms of hydrogen and one of oxygen. A molecule of sulphuric acid invariably contains two atoms of hydrogen, one of sulphur, and four of oxygen. A molecule of potassium chlorate is always composed of just one atom of potassium chloride and three atoms of oxygen. Never is there any variation of these proportions in the same element, and a chemist will, without handling the elements, merely by mathematical calculation, unerringly produce ...
— Evolution - An Investigation and a Critique • Theodore Graebner

... (75 or more) Copper (2) Manganese Germanium Scandium Silver (2) Strontium Rhodium Neodymium Glucinum (2) Vanadium Silver Lanthanum Germanium Barium Tin Yttrium Tin Carbon Lead Niobium Lead (1) Scandium Erbium Molybdenum Potassium ...
— Scientific American Supplement, No. 799, April 25, 1891 • Various

... and brain of Eusapia. He proved that these invisible hands were, after all, material, and limited in their powers. He proved that the 'spirits' shared all Eusapia's likes and dislikes, and knew no more of chloride of iron or ferro-cyanide of potassium than she herself possessed—in short, while admitting the mystery of the process, he reduces all these phenomena to human, terrestrial level, and relates them wholly and simply to the brain and will of the psychic. Perhaps his state ...
— The Shadow World • Hamlin Garland

... not at all necessary for the postulation of wildly variant life forms. Earth itself was prolific in its variations; Earthlike planets were equally inventive. Carbon, hydrogen, and oxygen, plus varying proportions of phosphorus, potassium, iodine, nitrogen, sulfur, calcium, iron, magnesium, manganese, and strontium, plus a smattering of trace elements, seem to be able to cook up all kinds of life under ...
— Cum Grano Salis • Gordon Randall Garrett

... gas is a deadly poison, and the greatest care is required in its use. Always use 98 to 100 per cent pure potassium cyanide and a good grade of commercial sulfuric acid. The chemicals are always combined in the following proportion: Potassium cyanide, 1 oz.; sulfuric acid, 2 fluid oz.; water, 4 fluid oz. Always use an earthen dish, pour in the water first, ...
— Manual of Gardening (Second Edition) • L. H. Bailey

... has to swallow twenty grains or so of potassium bromide I can not conceive any pleasanter way of taking them than mixed with a ...
— The Strange Case of Mortimer Fenley • Louis Tracy

... aqueous solution calcium sulphate is deposited as crystals of gypsum, but when the solution contains an excess of sodium or potassium chloride anhydrite is deposited. This is one of the several methods by which the mineral has been prepared artificially, and is identical with its mode of origin in nature, the mineral having crystallized out ...
— Encyclopaedia Britannica, 11th Edition, Volume 2, Part 1, Slice 1 • Various

... cartridges for my revolver, and a number of hunting knives, skinning implements, wire traps of several sizes for capturing small mammals, butterfly nets, bottles for preserving reptiles in alcohol, insect-killing bottles (cyanide of potassium), a quantity of arsenical soap, bone nippers, scalpels, and all other accessories necessary for the collection of natural history specimens. There were three sets of photographic apparatus in my outfit, and one hundred and fifty-eight dozen dry plates, as well as all adjuncts for the developing, ...
— In the Forbidden Land • Arnold Henry Savage Landor

... known," Dundee admitted ruefully, as the three men entered Nita's bedroom, "that so ingenious a criminal as Tracey Miles would not have failed to provide against the possibility of discovery. He must have seized an opportunity to spill cyanide of potassium into the decanter when my eyes were off him for a moment—and ...
— Murder at Bridge • Anne Austin

... influence of the heavenly bodies over men. This same chemist was acquainted with oxidizing and calcining processes, and knew methods of obtaining soda and potash salts, and the properties of saltpetre. Also nitric acid was obtained from the nitrate of potassium. These and other similar examples represent something of the achievements of the Arabians in chemical knowledge. Still, their lack of knowledge is shown in their continued search for the philosopher's stone and the attempt to create the ...
— History of Human Society • Frank W. Blackmar

... of ozone in any vessel or in the atmosphere, may be detected by a test-paper which has been moistened with a solution composed of 1 part of pure iodide of potassium, 10 parts of starch, and 100 parts of water, boiled together for a few moments. Paper so prepared turns immediately blue when exposed to the action of ozone, the tint being lighter or darker according to the quantity. Schoenbein's ...
— Chambers's Edinburgh Journal, No. 455 - Volume 18, New Series, September 18, 1852 • Various

... at 1916 Pennsylvania Street last night, was not| |a suicide. In the opinion of her brother, Wallace | |Thomas, who was on his way from Lindale to see her, | |Hans Roehm, who had promised to marry her, may have | |been responsible for her death from cyanide of | |potassium. | ...
— News Writing - The Gathering , Handling and Writing of News Stories • M. Lyle Spencer

... on your paper first a solution of iodide of potassium, then a solution of nitrate of silver. Iodide of silver forms, and saturates the paper. The excess of nitrate of silver and the heavy yellow powder which forms are now washed off, and the paper is ready for the camera. The picture ...
— Harper's Young People, December 2, 1879 - An Illustrated Weekly • Various

... to complicated atomic arrangement, and we should expect to find the spectra of bodies of low atomicity much simpler than those of high. This seems to be the case, for we find that the spectra of Sodium, Potassium, Lithium, Hydrogen, Chlorine, which are all monad elements, consist of comparatively ...
— Aether and Gravitation • William George Hooper

... from my chair and hastily collected the necessaries for the journey. The little board and the lamp I put in my overcoat pocket; I overhauled the emergency bag and added to its usual contents a bottle of permanganate of potassium which I thought I might require. Then I tucked the evening paper under my arm ...
— The Mystery of 31 New Inn • R. Austin Freeman

... bromine set free during exposure, otherwise the darkening would be very slight. I used this paper for a while, but found it rather slow. The tannin also turned brown on keeping for a week or so. I then made some more, substituting for tannin potassium nitrite (not nitrate), which is colorless. This was an improvement, but still it ...
— Scientific American Supplement, No. 492, June 6, 1885 • Various

... acid is exactly the same as the hydrogen you drove out of water with an electric current. There is a metal called sodium (Na) and another called potassium (K) which are as soft as stiff putty and as shiny as silver; if you put a tiny piece of sodium (Na) or potassium (K) on water, it will drive the hydrogen out of the water just as zinc drove it out of the acid. The action is so swift and violent and releases so much heat that the hydrogen which is set free catches fire. This ...
— Common Science • Carleton W. Washburne

... left as an ash when food is thoroughly burnt. The most important salts are calcium phosphate, carbonate and fluoride, sodium chloride, potassium phosphate and chloride, and compounds ...
— The Chemistry of Food and Nutrition • A. W. Duncan

... to employ an excess of copper sulphate and to determine the copper dissolved in the filtrate. The separation of copper from cadmium being difficult and laborious, and the volumetric estimation with potassium cyanide not practicable, it is not ...
— Scientific American Supplement, No. 455, September 20, 1884 • Various

... and corrodes, causing great pain, often for hours; strychnine, which acts through the nerves, producing convulsions and sometimes a fixed distortion of the features, which even the relaxation of death cannot remove; corrosive sublimate, prussic acid, cyanide of potassium—too quick and deadly. It must be a poison, if poison at all, which will bring about a sensible progression through perceptible stages of suffering, so that during this time the efficiency of physical pain may be raised by the addition ...
— The Ape, the Idiot & Other People • W. C. Morrow

... for drinking, no man could put him under the table. Later in life, he invented his own special draught, a combination of champagne and porter; ordinary men dropped under the deadly compound as from a dose of cyanide of potassium, but Otto could drain his quart without taking the tankard from his lips. He soon had all the company under the chairs, ...
— Blood and Iron - Origin of German Empire As Revealed by Character of Its - Founder, Bismarck • John Hubert Greusel

... the Difference between Free Oxygen and Oxygen in Combination.*—Examine some crystals of potassium chlorate (KClO3). They contain oxygen in combination with potassium and chlorine. Place a few of these in a small test tube and heat strongly in a gas or alcohol flame. The crystals first melt, and the liquid which ...
— Physiology and Hygiene for Secondary Schools • Francis M. Walters, A.M.

... hesitated. "Mind, it is only a suspicion. Cyanide of potassium or cyanogen gas; either ...
— The Silent Bullet • Arthur B. Reeve

... each of the following compounds is necessary to prepare 50 litres of Oxygen?—Water, Mercuric Oxide, Potassium Chlorate. ...
— The Fulfilment of a Dream of Pastor Hsi's - The Story of the Work in Hwochow • A. Mildred Cable

... they could have stumped any chemistry or "cow college" professor in the institution, save "old" Moss, head of the department, and even him they puzzled and edified more than once. Lloyd's discovery of the "death bacillus" of the sea toad, and his experiments on it with potassium cyanide, sent his name and that of his university ringing round the world; nor was Paul a whit behind when he succeeded in producing laboratory colloids exhibiting amoeba-like activities, and when he ...
— Moon-Face and Other Stories • Jack London

... with its native vegetation appears to alter very little and very slowly in composition. Plants spring up, assimilate the soil nitrates, phosphates, potassium salts, etc., and make considerable quantities of nitrogenous and other organic compounds: then they die and all this material is added to the soil. Nitrogen-fixing bacteria also add to the stores of nitrogen compounds. But, on the other ...
— The Enclosures in England - An Economic Reconstruction • Harriett Bradley

... which has been most universally adopted by the several states, is the law requiring the manufacturer and dealer in commercial fertilizers to guarantee the percentage of the so-called essential fertilizing elements—nitrogen, phosphorus and potassium—contained in each bag of fertilizer offered for sale. Subsequent control laws have been modeled more or less closely after this law. Hence a description of the operation and execution of it will ...
— The Young Farmer: Some Things He Should Know • Thomas Forsyth Hunt

... For ten years, from 1803, he was engaged in agricultural researches, and in 1813 published his "Elements of Agricultural Chemistry." During the same decade he conducted important investigations into the nature of chemical combination, and succeeded in isolating the elements potassium, sodium, strontium, magnesium, and chlorine. In 1812 he was knighted, and married Mrs. Apreece, nee Jane Kerr. In 1815 he investigated the nature of fire-damp and invented the Davy safety lamp. In 1818 he received a baronetcy, and ...
— The World's Greatest Books - Volume 15 - Science • Various

... indicating less intense and probably cooler conditions of deposition. Locally other minerals are associated with the ores, as, for instance, in the Goldfield district of Nevada (p. 230), where alunite replaces the igneous rock. Alunite is a potassium-aluminum sulphate, which differs from sericite in that sulphur takes the place of silicon. In the quartzites of the lead-silver mines of the Coeur d'Alene district of Idaho (p. 212), siderite or iron carbonate is a characteristic ...
— The Economic Aspect of Geology • C. K. Leith

... to flow back by way of the vanning apparatus, thus providing not only for catching the grains of gold by the concentrating machine, but also for the dissolving of the fine impalpable gold dust, or natural precipitate, by the action of the cyanide of potassium. ...
— Twentieth Century Inventions - A Forecast • George Sutherland

... for the last time. You may catch me, but you will not take me. For a long time past I have provided against just such an outcome as this. Upon my uniform tunics, upon my overalls, I have fixed buttons, hollowed out, each of which contains enough of cyanide of potassium to kill three men. If I were court-martialled and shot, there would be no disgrace to me, an officer on secret service, but a whisper of it might steal to Portsmouth and give deep pain to one there. No one will learn of the petty officer of R.N.V.R. who died far away in the ...
— The Lost Naval Papers • Bennet Copplestone

... battery surface, the same deflection. Hence he inferred the possibility of comparing, as regards quantity, electricities which differ greatly from each other in intensity. His object now is to compare frictional with voltaic electricity. Moistening bibulous paper with the iodide of potassium—a favourite test of his—and subjecting it to the action of machine electricity, he decomposed the iodide, and formed a brown spot where the iodine was liberated. Then he immersed two wires, one of zinc, the other of platinum, ...
— Faraday As A Discoverer • John Tyndall

... for preparing the ferro-prussiate paper is made as follows: One part by weight of ferricyanide of potassium (red prussiate) is dissolved in eight parts of water, and one part of ammonia-citrate of iron is added. This last addition must be made in the dark-room. A smooth-faced paper is now floated on the liquid and allowed ...
— Scientific American Supplement, No. 460, October 25, 1884 • Various

... with poetry and irony to such folk. They are admitted to be saints, but about the time they have got too good for their earthly setting, they have been tied to stakes and lighted up with oil and faggots; or a soda phosphate with a pinch of cyanide of potassium inserted has been handed to them, as in the case of our old friend, Socrates. And it's right. When a man gets too wise and good for his fellows and is embarrassed by the healthful scent of good human ...
— The Delicious Vice • Young E. Allison

... to a species of mineral known as feldspar. The particular feldspar that furnishes most of the moonstone is orthoclase, a silicate of potassium and aluminum. Another feldspar sometimes seen as a semi-precious stone is Labradorite. Amazonite, also, is a feldspar. Sunstone is a feldspar which includes tiny flakes or spangles ...
— A Text-Book of Precious Stones for Jewelers and the Gem-Loving Public • Frank Bertram Wade

... are cured now which a few years ago would have remained uncured. Indeed, in relation to the associated bodily state, it may be said that specific treatment has been adopted. Remedies, like iodide of potassium, in large doses, are employed in cases in which, from the increased attention directed in recent years to the somatic aetiology of insanity, a causal relation between the physical and mental condition has ...
— Chapters in the History of the Insane in the British Isles • Daniel Hack Tuke

... or natural picture. The first thing, then, is to lay a sensitive coating on a piece of glass,—crown-glass, which has a natural surface, being preferable to plate-glass. Collodion, which is a solution of gun-cotton in alcohol and ether, mingled with a solution of iodide and bromide of potassium, is used to form a thin coating over the glass. Before the plate is dry, it is dipped into a solution of nitrate of silver, where it remains from one to three or four minutes. Here, then, we have essentially the same chemical elements that we have seen employed ...
— Atlantic Monthly, Volume 3, No. 20, June, 1859 • Various

... of two fixed alkalies, which, in direct refutation of the hypothesis previously adopted, were found to consist of a peculiar metallic base united with a large quantity of oxygen. These alkalies were potash and soda, and the metals thus discovered were called potassium and sodium, Mr. Davy was equally successful in the application of galvanism to the decomposition of the earths. About this time he became Secretary of the Royal Society. In 1808, Mr. Davy received a prize from the French Institute. During ...
— The Mirror of Literature, Amusement, and Instruction—Volume 13 - Index to Vol. 13 • Various

... moistens a slip of white linen or cotton, free from starch, with nitric acid at 10 per cent. and rubs it for ten to fifteen seconds on the side of the utensil under examination, and then deposits a drop of a solution of potassium iodide, at 5 per cent. on the part which has been in contact. A lead glaze simply fused gives a very highly colored yellow spot of potassium iodide; a lead glaze incompletely vitrified gives spots the more decided, the ...
— Scientific American Supplement, No. 508, September 26, 1885 • Various

... copper, are immersed in dilute sulphuric acid, a current is set up which proceeds through the liquid from the iron to the copper; but, if the plates after being carefully washed are placed in a solution of potassium sulphide, a current is produced in the opposite direction. The copper is now ...
— Cyclopedia of Telephony & Telegraphy Vol. 1 - A General Reference Work on Telephony, etc. etc. • Kempster Miller

... tell you about myself? I am not stiff, I have ... I don't know what. Bromide of potassium has calmed me and given me eczema on the middle of ...
— The George Sand-Gustave Flaubert Letters • George Sand, Gustave Flaubert

... morphia I give Mr. E. a powder of bromide of potassium, amounting to 30 or even 40 grains at a time, and an average of about 100 grains per day. The value of this remedy has been a matter of much controversy—some practitioners lauding it to the skies as one of ...
— The Opium Habit • Horace B. Day

... alcohol of 95 per cent., and of 30 grms. mercury chloride in an equal measure of the same solvent; both liquids are filtered and united; a standard solution of sodium hyposulphite produced by digestion of 24 grms. of the dry salt with 1 liter water and titration with iodine solution; solution of potassium iodide of 1:10; chloroform, and finally a solution of starch. The above solution of mercury iodo-chloride acts on both free unsaturated acids and glycerides, producing addition products. For testing a sample of 0.2 to ...
— Scientific American Supplement, Vol. XIX, No. 470, Jan. 3, 1885 • Various

... pipe and use it as a funnel to introduce about 1-1/2 ounces of sulphite of potassium into any outside holes tenanted by rats. Not to be used in dwellings. To get rid of mice use tartar emetic mingled with any favorite food; they will eat, sicken and take ...
— The Handy Cyclopedia of Things Worth Knowing - A Manual of Ready Reference • Joseph Triemens

... observed that M. Chatain, in the course of his able researches on iodine, had analysed the waters of those Alpine valleys most subject to goitre, and found that mineral almost entirely wanting. And it has been proved that sea-salt, containing a minute quantity of ioduret of potassium, acted as a preservative from goitre on all the inhabitants of a district who made use of it. The air, too, has been examined as well as the water, and, so far as yet ascertained, the proportion of iodine in the atmosphere is variable, ...
— Chambers' Edinburgh Journal - Volume XVII., No 422, New Series, January 31, 1852 • Various

... C. In this experiment ten cuttings each of English walnut, butternut, Japanese walnut, hickory, chestnut and black walnut were planted in sand and watered at intervals with a 1 to 10,000 solution of potassium permanganate. In the course of time the majority of cuttings came out in leaf, but none formed roots, and hence soon died. It is admitted that this experiment may have been improperly planned and conducted, but it showed at any rate that it is not an easy matter to propagate ...
— Northern Nut Growers Association Report of the Proceedings at the Fifteenth Annual Meeting • Various

... less sincere, which also afforded distraction. After one the captain let off a rocket, also one of Holmes's patent "flare-ups." This is a contrivance for saving life during the dark. It consists of a box filled with potassium, which is pierced at both ends and thrown into the sea fastened to a life-buoy. In contact with the water the metal ignites, and for about half-an-hour sheds a radiance for a long way. It is visible for miles off. If a man falls overboard he knows then where to look ...
— Six Letters From the Colonies • Robert Seaton

... not durable, however, is "logwood;" its extract is combined with a little chromate of potassium and boiled together in water. It possesses its own "gum" and contains some tannin. In combination with alum and water, it forms a ...
— Forty Centuries of Ink • David N. Carvalho

... some pure tartrate of lime, in the form of a granulated, crystalline powder, into pure water, together with some sulphate of ammonia and phosphates of potassium and magnesium, in very small proportions, a spontaneous fermentation will take place in the deposit in the course of a few days, although no germs of ferment have been added. A living, organized ferment, of ...
— The Harvard Classics Volume 38 - Scientific Papers (Physiology, Medicine, Surgery, Geology) • Various

... Mrs. Wood followed her, saying: "If ever you want to kill a cat, Laura, give it cyanide of potassium. I killed a poor old sick cat for Mrs. Windham the other day. We put half a teaspoonful of pure cyanide of potassium in a long-handled wooden spoon, and dropped it on the cat's tongue, as near the throat as we could. Poor pussy she died in a few seconds. ...
— Beautiful Joe • Marshall Saunders

... some simple experiments for the chemists' club. Put into a small chemist's mortar as much finely powdered potassium chlorate as will lie upon the point of a penknife blade, and half the quantity of sulphur; cover the mortar with a piece of paper having a hole cut in it large enough for the handle of the pestle to pass through. When the two substances are well mixed, ...
— Harper's Young People, September 28, 1880 - An Illustrated Weekly • Various



Words linked to "Potassium" :   brine, seawater, potassium hydrogen carbonate, metallic element, kainite, langbeinite, metal, carnallite, potassium bicarbonate, sylvine, sylvite, saltwater



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