Consists of extracts from rare published works on American Indian, African, and Asian languages, together with the notes and comments of Du Ponceau; linguistic essays, vocabulary lists (mostly of numerals) for North, Middle, and South American languages; materials on Chinese, Pacific, Asian, and African languages; notes on the languages of the Tartars, Arabs, Greeks, Polynesians, and others. Included are copies of several manuscripts as well as copies of two letters of Wilhelm von Humboldt. One of them is dated Berlin, April 9, 1822; L. 6p. In French. Exchange of publications [with the APS?]. Indian languages. Languages. Refers to A.von Humboldt, Heckewelder, Zeisberger, Eliot and Vater. See vol.5, 19-24. Important for references to the Historical and Literary Committee of the APS; to Du Ponceau's publications on Delaware, Chippewa, and Chinese; and to his correspondence with philologists Adelung, Heckewelder, Humboldt, Gallatin, and Vater.