kinds of, [375];
long-headed, or dolichocephalic, [375];
short-headed, or brachycephalic, [375];
medium, or mesocephalic, [375];
Cro-magnon skull, [377], [389];
Calaveras skull, [384], [385];
Trenton gravel skulls, [388];
Enghis skull, [389];
Neanderthal skull, [389], [390];
Hochelagan skull, [389];