ARYANS. This word is used by some of the "Satem" speakers of Indo-European languages (q.v.) with the meaning "noble" and is the name of one of the tribes of these people. As Sir George Grierson points out "Indians and Iranians who are descended from an Indo-European stock have a perfect right to call themselves Aryans but we English have not." (Report of the Linguistic Survey of India, vol. i., p. 96, 1927.) Max Muller, who used the term, was always cautious and distinguished clearly between the data which fall to the physical anthropologist, those which the student of culture investigates, and the linguistic ma terial which demands the scrutiny of the philologist. It takes time to eradicate the errors of enthusiasm, but scientific and careful workers accept the view expressed by Boas (Mind of Primitive Man, 192 7) "that a people may remain constant in type and language and change in culture : that it may remain constant in type but change in language : or that it may remain constant in language and change in type and culture." There is no better nor more striking example in science than this of the danger of affixing labels without due scrutiny and intelligent discrimination.