CHAPTER II.

Ethnology--its objects--the chief problems connected with it--prospective questions--transfer of populations-- Extract from Knox--correlation of certain parts of the body to certain external influences--parts less subject to such influences--retrospective questions--the unity or non-unity of our species--opinions--plurality of species-- multiplicity of protoplasts--doctrine of development-- Dokkos--Extract--antiquity of our species--its geographical origin--the term _race_ 37–66