=Porter R. Lee= speaking to the National Conference of Social Work in 1915 (see Report p. 597) described three conceptions of the social worker. First, “Any person is a social worker if his work has conscious social purpose, although his vocation may be any one of the historic forms of human activity. The second conception includes as social workers those who are engaged in so-called preventive work, that is to say, those whose efforts are directed towards social legislation, toward the development of the social point of view in the general public and toward readjustments in social institutions and social habits. * * * social work in this sense is not concerned with those who are disabled by adverse conditions of life but with the adverse conditions. The third conception of the social worker on the other hand identifies him primarily with efforts on behalf of the subnormal. To one holding this conception the social worker is one who endeavors through case work to reestablish disabled families and individuals in a routine of normal life. This does not preclude interest in social legislation and other forms of preventive work, but these are not the first task of the social worker. When social work as a generic term first came into general use leaders in the work for dependent families, neglected children, the defective, the delinquent and the destitute sick comprised almost the entire group to which it was applied.” In the 1920 Conference (see Report p. 466) Mr. Lee said: “The subject matter of social work is the adjustment of men to their environment. * * * The necessity for social work arises because of the difficulties faced by men in making this adjustment. These difficulties are sometimes in the man and sometimes in the environment. Some factors in the environment bear too heavily upon all men, some bear too heavily upon a smaller number. * * * A large part of social work is conducted with the purpose of softening the effect of environmental factors which bear with undue severity upon all men. Another large part of social work aims at the development of greater resourcefulness in all men in meeting environmental demands. The greater part of social work, however, is at present devoted to the development of a higher adjusting power in those persons who are most handicapped by environment or a modification of those particular environmental factors which handicap them.”