I Do Not intend to say to-night all over again what has been said many times before in admirable addresses to learned societies. I propose only to bring to your notice some features of the subject which have often been overlooked or disregarded and yet seem to me to be important.May I in the first place mention the confusion which frequently arises when someone asks whether social anthropology can, or should be, an applied science. It is evident that it cannot be applied in the same sense as, for instance, medicine or engineering are said to be applied sciences since it cannot state its findings as laws in the light of which it can predict events. Perhaps it will never be able to formulate laws as these are understood in the exact sciences. Nevertheless social anthropology is a body of knowledge about human societies and, like all knowledge of the kind, can be used in a common-sense way to solve social problems; and there is surely no one who holds that it should not be so used.