In this article, which was read before the Philological Society, January 24, 1845, a large number of North American languages are examined and their affinities discussed in support of the two following postulates made at the beginning of the paper: First, “No American language has an isolated position when compared with the other tongues en masse rather than with the language of any particular class;” second, “The affinities between the language of the New World, as determined by their _vocabularies_, is not less real than that inferred from the analogies of their _grammatical structure_.” The author’s conclusions are that both statements are substantiated by the evidence presented. The paper contains no new family names. 1847. Prichard (James Cowles). Researches into the physical history of mankind (third edition), vol. 5, containing researches into the history of the Oceanic and of the American nations. London, 1847. It was the purpose of this author, as avowed by himself, to determine whether the races of men are the cooffspring of a single stock or have descended respectively from several original families. Like other authors on this subject, his theory of what should constitute a race was not clearly defined. The scope of the inquiry required the consideration of a great number of subjects and led to the accumulation of a vast body of facts. In volume 5 the author treats of the American Indians, and in connection with the different tribes has something to say of their languages. No attempt at an original classification is made, and in the main the author follows Gallatin’s classification and adopts his conclusions. 1848. Gallatin (Albert). Hale’s Indians of Northwest America, and vocabularies of North America, with an introduction. In Transactions of the American Ethnological Society, New York, 1848, vol. 2. The introduction consists of a number of chapters, as follows: First, Geographical notices and Indian means of subsistence; second, Ancient semi-civilization of New Mexico, Rio Gila and its vicinity; third, Philology; fourth, Addenda and miscellaneous. In these are brought together much valuable information, and many important deductions are made which illustrate Mr. Gallatin’s great acumen. The classification given is an amplification of that adopted in 1836, and contains changes and additions. The latter mainly result from a consideration of the material supplied by Mr. Hale, or are simply taken from his work. The groups additional to those contained in the Archæologia Americana are: 1. Arrapahoes. 2. Jakon. 3. Kalapuya. 4. Kitunaha. 5. Lutuami. 6. Palainih. 7. Sahaptin. 8. Selish (Tsihaili-Selish). 9. Saste. 10. Waiilatpu. 1848, Latham (Robert Gordon). On the languages of the Oregon Territory. In Journal of the Ethnological Society of London, Edinburgh, 1848, vol. 1.