[7] Daniel Button’s well-known coffee-house was on the south side of Russell Street, Covent Garden, nearly opposite Tom’s. Button had been a servant of the Countess of Warwick, and so was patronized by her spouse, the Right Hon. Joseph Addison. Sir Robert Walpole’s creature, Giles Earl, a trading justice of the peace (compare Fielding and “300_l._ a year of the dirtiest money in the world”) used to examine criminals, for the amusement of the company, in the public room at Button’s. Here, too, was a lion’s head letter-box, into which communications for the _Guardian_ were dropped. At Button’s, Pope is reported to have said of Patrick, the lexicographer, who made pretensions to criticism, that “a dictionary-maker might know the meaning of one word, but not of two put together.” [8] Not, however, to forget that another Duchess, Marlborough’s daughter, who loved Congreve so, had after his death a waxen image made in his effigy, and used to weep over it, and anoint the gouty feet. [9] “They said he could not colour,” said old Mrs. Hogarth one day to John Thomas Smith, showing him a sketch of a girl’s head. “It’s a lie; look there: there’s flesh and blood for you, my man.” Studies in Animal Life. “Authentic tidings of invisible things;— Of ebb and flow, and ever-during power, And central peace subsisting at the heart Of endless agitation.”—THE EXCURSION. CHAPTER IV. An extinct animal recognized by its tooth: how came this to be possible?—The task of classification.—Artificial and natural methods.—Linnæus, and his baptism of the animal kingdom: his scheme of classification.—What is there underlying all true classification?—The chief groups.—What is a species?—Re-statement of the question respecting the fixity or variability of species.—The two hypotheses.—Illustration drawn from the Romance languages.—Caution to disputants.