The philosophic fashion of modern times is evidently to be analyzing something; as the prevailing interest in the United States is the analysis of specialized languages, in England the analysis of ordinary language, so in Europe it is the analysis of consciousness. The philosophic writings of Professor Maurice Merleau-Ponty provide an excellent illustration of the European trend; the sublety of his own analysis and the careful manner in which they are related to the philosophic tradition and to the science of psychology render them well worth study. I should like to present here a description of certain characteristics of his type of Phenomenological-Existentialism. It will be convenient to begin with a brief consideration of his criticism of the Realistic and Idealistic traditions in philosophy. Then it will be possible to consider his own positive doctrine. Finally I want to indicate, both in passing and especially in the last part of this essay, the relation which his philosophy bears to scientific work of the present time and to the Hegelian-Husserlian tradition to which his work belongs. The intention of this essay is primarily expository and not critical; my criticisms of this philosophy will be presented in another essay.