Abstract
It is not the purpose of a Survey to give a detailed analysis of certain books like a single review, but rather to draw the attention of the reader to works of some importance and use to him, and to indicate, if possible, some general trends of thought of to-day. Whereas our last survey was devoted to Philosophy of History, we take under review to-day some books on the Philosophy of Nature, that is philosophy of physics, chemistry, and biology, and wefinish with some historical books on the subject