MENTAL AGE • DICCIONARIO INGLES.COM • Definition of Mental age

... public, would not be content with what had gone before. Something was to be again produced, that would make the press move; and that something, we believe, every one will agree with us, that, notwithstanding the splendour of Genius which the imaginative tribe are endowed with in this mental age, was to be that which was new—that, in fact, which would sell. This, as might be expected, caused the booksellers and their hacks to look around them, and the tempting gilt which the former held out, (scanty though the ...

— Sinks of London Laid Open • Unknown