A list of about 300 Adái words was gathered in 1802 by Martin Duralde, which proves it to be a vocalic language independent of any other, though a few affinities are traceable with the Pani dialects. The orthography of that vocabulary cannot, however, be fully relied on. The original is in the library of the American Philosophical Society, in Philadelphia. Rob. G. Latham, in his "Opuscula; Essays, chiefly philological," etc., London 1860; pp. 402-404, has compared Adahi words with the corresponding terms of other North American languages, but without arriving at a definite result.