Races and Peoples: Lectures on the Science of Ethnography

A series of illustrated lectures lays out the methods and findings of ethnography, beginning with physical traits and measurements, then surveying mental and social characteristics such as language, religion, kinship, and arts. It examines theories of human origins, migration routes, and geographic areas of population development, and explains causes of variation, selection, and racial mixing. The later lectures apply this framework to classify major racial branches and regional subdivisions, describing their physical types, linguistic affiliations, cultural practices, and archaeological context while highlighting how environment, selection, and social factors shape human diversity.