Molecule, n.: The ultimate, indivisible unit of matter. It is distinguished from the corpuscle, also the ultimate, indivisible unit of matter, by a closer resemblance to the atom, also the ultimate, indivisible unit of matter ... The ion differs from the molecule, the corpuscle and the atom in that it is an ion.

APHORISM, n. Predigested wisdom.

INCOMPOSSIBLE, adj. Unable to exist if something else exists. Two things are incompossible when the world of being has scope enough for one of them, but not enough for both - as Walt Whitman's poetry and God's mercy to man.

Alligator: The crocodile of America, superior in every detail to the crocodile of the effete monarchies of the Old World.

CERBERUS, n. The watch-dog of Hades, whose duty it was to guard the entrance - against whom or what does not clearly appear; everybody, sooner or later, had to go there, and nobody wanted to carry off the entrance.

IMPOSTOR n. A rival aspirant to public honors.

An appellate court which reverses the judgment of a popular author's contemporaries, the appellant being his obscure competitor.