the alleged popular confusion came, it certainly did not come from any teaching of scientific philologers. The truth of all this cannot be called in question. We have too many instances in recorded history of nations laying aside the use of one language and taking to the use of another, for anyone who cares for accuracy to set down language as any sure test of race. In fact, the studies of the philologer and those of the ethnologer strictly so called are quite distinct, and they deal with two wholly different sets of phenomena. The science of the ethnologer is strictly a physical science. He has to deal with purely physical phenomena; his business lies with the different varieties of the human body, and specially, to take that branch of his inquiries which most impresses the unlearned, with the various conformations of the human skull. His researches differ in nothing from those of the zooelogist or the paleontologist, except that he has to deal with the physical phenomena of man, while they deal with the physical phenomena of other animals. He groups the different races of men, exactly as the others group the genera and species of living or extinct mammals or reptiles. The student of ethnology as a physical science may indeed strengthen his conclusions by evidence of other kinds, evidence from arms, ornaments, pottery, modes of burial. But all these are secondary; the primary ground of classification is the physical conformation of man himself. As to language, the ethnological method, left to itself, can find out nothing whatever. The science of the ethnologer then is primarily physical; it is historical only in that secondary sense in which paleontology, and geology itself, may fairly be called historical. It arranges the varieties of mankind according to a strictly physical classification; what the language of each variety may have been, it leaves to the professors of another branch of study to find out.