inability to comprehend the employment of courteous language between persons who differ from each other in matters of opinion. With the accustomed suavity of a Frenchman and a gentleman, M. St. Hilaire declines entering into a discussion with Mr. Wilson, and leaves him to "settle this difference with his learned fellow-citizen," Mr. Prescott, mildly intimating at the same time that he will probably have "his hands full." Something more remains to be said of the use which our author has made of the learned professor of the Sorbonne. One page of his book Mr. Wilson devotes to "Acknowledgments." These are few, but ponderous. "Acknowledgments are made" to the Hon. Lewis Cass, for having written--without any ulterior view, we imagine, to Mr. Wilson's advantage--the before-mentioned article in the "North American Review"; to the late Mr. Gallatin, for the publication--also, we suspect, without any foresight of the tremendous uses to which it was to be turned--of a paper on the Mexican dialects; to "Aaron Erickson, Esq., of Rochester, N.Y., for the advantages he has afforded us in the prosecution of our arduous investigations"; to "Major Robert Wilson, now at Fort Riley, Kanzas," for no particular reason expressed; and to "M. _Rousseau de_ St. Hilaire, both for the flattering notice he has taken of our preliminary work" (why not, "work preliminary?") "on Mexico, and for the advantages derived from his writings." In regard to the "advantages" here mentioned, we are going to relieve Mr. Wilson's mind. His obligations to M. St. Hilaire are really far lighter than he supposes. It is true that he has picked most of the little information he possesses in regard to Spanish history out of the professor's work, and has strewed his pages with copious extracts from this recondite source. But, in making his acknowledgments, he might have gone still farther back. M. St. Hilaire is a laborious and enthusiastic scholar.