on the one hand largely an expression of the social life surrounding him and on the other hand society being largely an expression of individual character. The reasons for these assertions will appear later as we develop our subject. What is Sociology?--The science which deals with human association, its origin, development, forms, and functions, is sociology. Briefly, sociology is a science which deals with society as a whole and not with its separate aspects or phases. It attempts to formulate the laws or principles which govern social organization and social evolution. This means that the main problems of sociology are those of the organization of society on the one hand and the evolution of society on the other. These words, _organization_ and _evolution_, however, are used in a broader sense in sociology than they are generally used. By organization we mean any relation of the parts of society to each other. By evolution we mean, not necessarily change for the better, but orderly change of any sort. Sociology is, therefore, a science which deals with the laws or principles of social organization and of social change. Put in more exact terms this makes sociology, as we said at the beginning, the science of the origin, development, structure, and function of the forms of association. We may pass over very rapidly certain faulty conceptions of sociology. The first of these is that it is the study of social evils and their remedies. This conception is faulty because it makes sociology deal primarily with the abnormal rather than the normal conditions in society, and secondly, it is to be criticized because it makes sociology synonymous with scientific philanthropy. It is rather the science of philanthropy, which is an applied science resting upon sociology, that studies social evils and their remedies. This is not saying, of course, that sociology does not consider social evils, but that it considers them as incidents in the normal processes of social evolution rather than as its special matter. A second conception of sociology which is to be dismissed as inadequate is the conception that it is the science of social phenomena. This conception is not incorrect, but is somewhat vague, as there are manifestly other sciences of social phenomena, such as economics and political science. Such a conception of sociology would make it include everything in human society. A third faulty conception is that it is the science of human institutions. This is faulty because it again is too narrow. An institution is a _sanctioned_ form of human association, while sociology deals with the ephemeral and unsanctioned forms, such as we see in the phenomena of mobs, crazes, fads, fashions, and crimes, as well as with the sanctioned forms. A fourth conception which might be criticized is that sociology is the science of social organization. This makes sociology deal with the laws or principles of the relations of individuals to one another,