In the discussion of the race problem there are two possible points of departure. It may be discussed from the psychophysical viewpoint and an inquiry instituted into the mental differences of races, or the question may be discussed from the viewpoint of the sources of race differences and race antagonism. The question has up to the present day been discussed chiefly from the social and economical viewpoint, and it has failed to lead the way to any lasting solution of the problem. For that reason I shall attack the problem from another angle and look more into the biological aspect of the question.

i

In discussing the question on the basis of psychophysical differences between the two races, the fact should not be lost sight of that when we talk of the characteristic of a race as a whole, we are dealing with an abstraction that has no existence in nature, but all members