Abstract
The character of these books should be less unexpected when one notes that their author, A. C. Crombie, is not only lecturer in the Department of History and Philosophy of Science, University College, London, but is also the editor of The British Journal for the Philosophy of Science. One would expect, then, that his approach to the problems of the philosophy of science would naturally proceed through the history of science, and that he would be less interested in elaborating the details of a particular doctrine in the philosophy of science than in viewing the events of the history of science in their larger aspects, aspects which merge insensibly into the phases of the history of philosophy. And just this is the case.