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 cupation as their peculiar one, or as an aggregate of people who have by some means become associated with a certain occupation. With this definition such occupational castes are common in many communities. In many societies there is a tendency of division of occupations on racial lines—so much so that a peculiar occupation becomes associated with a peculiar tribe. Thus in India an aggregate may be formed first and it may take to a peculiar trade afterward.

In India peoples of higher civilization were migrating eastward and coming into contact with those who were less civilized, and some sort of division of occupation in racial lines was taking place. All the occu-