More important opponents have been found among the traders in the current literature of the day; as well your 'penny-a-liner,' as the man who has had the courage to write a book, and the good fortune to vend a copy-right, have been unmercifully witty at the expense of my brethren; and without waiting to inquire whether any important truth was concerned in phrenological investigation, they have only sought to know whether any thing ludicrous could be derived from it. These oracles Ignorance consulted, and the response was--a laugh. One American author, whose writings denote the combined action of mirthfulness and destructiveness, very magnanimously allowed the phrenologist the distinction of being one of the 'Three Wise Men of Gotham.' He is portrayed as sallying forth with no less enthusiasm than La Mancha's renowned knight, nor with less 'rueful visage,' upon a forlorn pilgrimage to some Golgotha, in quest of specimens to illustrate the truths of his mighty discovery; while one of his high compeers sails in quest of the great central hole of the earth; and the other stands in a glow of intense rapture, viewing the sudden perfectability of human nature. But alas for such noble enthusiasm! If our grave author's relation of the facts be genuine, (and who doubts his historical accuracy?) the 'Three little boys that a-sliding went, All on a summer's day,' met with an enviable fate, compared with that of these children of wisdom. The captain's boat never entered the wished-for haven; the philanthropist failed to make the lion and the lamb lie down together in peace and safety; and the unhappy phrenologist, in his 'meditations among the tombs,' erred in pronouncing upon the traits of mind that once inhabited the poor fragments he had gathered up; and he found his science blown to atoms, because he mistook the cranium of a fool for that of a philosopher!--a mistake which the vanity of an author might possibly make in his own case, with far better opportunities of judging aright. A science that could survive an attack like this, must have had _brains_ indeed to support it; and he who ventured to proclaim its truth, after a world's laugh had announced its folly, must have possessed more than an ordinary share of moral courage. But the science of Human Nature survived this satire, and having outlived the sneers of learned prejudice, and the obstreperous mirth of vulgar ignorance, now commands much of the serious attention of mankind.