Homoeopathy came, and with one harlequin bound leaped out of its century backwards into the region of quagmires and fogs and mirages, from which true medical science was painfully emerging. All the trumpery of exploded pharmacopoeias was revived under new names. Even the domain of the loathsome has been recently invaded, and simpletons are told in the book before us to swallow serpents' poison; nay, it is said that the _pediculis capitis_ is actually prescribed in infusion,--hunted down in his capillary forest, and transferred to the digestive organs of those he once fed upon. It falsely alleged one axiom as the basis of existing medical practice, namely, _Contraria contrarues curantur_,--"Contraries are cured by contraries." No such principle was ever acted upon, exclusively, as the basis of medical practice. The man who does not admit it as _one_ of the principles of practice would, on _medical_ principles, refuse a drop of cold water to cool the tongue of Dives in fiery torments. The only unconditional principle ever recognized by medical science has been, that diseases are to be treated by the remedies that experience shows to be useful. The universal use of both _cold_ and _hot_ external and internal remedies in various inflammatory states puts the garrote at once on the babbling throat of the senseless assertion of the homaeopathists, and stultifies for all time the nickname "allopathy." It falsely alleged a second axiom, _Similia similibus curantur_,--"Like is cured by like,"--as the basis of its own practice; for it does not keep to any such rule, as every page of the book before us abundantly shows. It subjected credulous mankind to the last of indignities, in forcing it to listen to that doctrine of infinitesimals and potencies which is at once the most epigrammatic of paradoxes, and the crowning exploit of pseudo-scientific audacity. It proceeded to prove itself true by juggling statistics; some of the most famous of which, we may remark, are very well shown up by Professor Worthington Hooker, in a recent essay. And having done all these things, it sat down in the shadow of a brazen bust of its founder, and invited mankind to join in the Barmecide feast it had spread on the coffin of Science; who, however, proved not to have been buried in it,--indeed, not to have been buried at all.