IN the question about the meaning of Being, what is primarily interrogated is those entities which have the character of Dasein. The preparatory existential analytic of Dasein must, in accordance with its peculiar character, be expounded in outline, and distinguished from other kinds of investigation which seem to run parallel (Chapter 1). Adhering to the procedure which we have fixed upon for starting our investigation, we must lay bare a fundamental structure in Dasein: Being-in-the-world (Chapter 2). In the interpretation of Dasein, this structure is something 'a priori'; it is not pieced together, but is primordially and constantly a whole. It affords us, however, various ways of looking at the items which are constitutive for it. The whole of this structure always comes first; but if we keep this constantly in view, these items, as phenomena, will be made to stand out. And thus we shall have as objects for analysis: the world in its worldhood (Chapter 3), Being-in-the-world as Being-with and Being-one's-Self (Chapter 4), and Being-in as such (Chapter 5). By analysis of this fundamental structure, the Being of Dasein can be indicated provisionally. Its existential meaning is care (Chapter 6).