The paper is concerned with the development and institutionalization of Polish sociology viewed against that of the world. The authoress' thesis is that since the 2nd Republic of Poland it is the American pattern of practicing sociology (both in terms of its content and methods) that has been dominating. As for the organisation of science, however, it has been in Poland very much like in other European countries. It is not until the last two decades that these organisational patterns have tended to be more and more American all over Europe as well. What is the relation between the development of a branch of science and its institutionalization? There are two types of answer in the sociological literature. According to Terry N. Clark, the basic elements of branch development are: (a) a coherent idea, a sort of paradigm; (b) talented individuals evolving the paradigm; and (c) institutionalization of basic organisational structures for maintaining and enlarging scientific knowledge. For Edward Shils as well as for Shmuel N. Eisenstadt and Miriam Curelaru, all of them dealing with the development of sociology, sociological theories are themselves a part of its institutionalization. The authoress accepts Clark's conception and analyses the relationship between sociological theory and the institutionalization of sociology as two separate variables. While examining the stages of the development of sociology, Eisenstadt's and Curelaru's solutions are used.