ABSTRACT
Superficially people of various regions are quite unlike, yet we find no such extremes as in domestic animals, e.g. the draught-horse and the Shetland pony, the lap-dog and the Great Dane. No race of men consistently averages above 5 ft. 10 in. in height, and in only a few small tribes is the average below 5 ft. Hair varies in human beings in colour, texture and quantity, but there are no fundamental differences in the bony skeleton, though some races have more individuals with round heads than others. The comparative size and shape of the vital organs, the location and connections of the main nerves and the principal blood-vessels, are practically the same in all races. Physicians and surgeons make no more variations in treating Negroes, Whites or Indians than they do in treating an office worker and an outdoor labourer of the white race.
