Comparative to the commonplace focus onto developments in mathematics and physics, the life sciences appear to have received relatively sparse attention within the early history of analytic philosophy. This paper addresses two related aspects of this phenomenon. On the one hand, it asks: to the extent that the significance of the life sciences was indeed downplayed by early analytic philosophers, why was this the case? An answer to this question may be found in Bertrand Russell’s 1914 discussions of the relation (...) between biology and philosophy. Contrary to received views of the history of analytic philosophy, Russell presented his own ‘logical atomism’ in opposition not only to British Idealism, but also to ‘evolutionism’. On the other hand, I will question whether this purported neglect of the life sciences does indeed accurately characterise the history of analytic philosophy. In answering this, I turn first to Susan Stebbing’s criticisms of Russell’s overlooking of biology, her influence on J.H. Woodger, and her critical discussion of T.H. Huxley’s and C.H. Waddington’s application of evolutionary views to philosophical questions. I then discuss the case of Moritz Schlick, whose evolutionist philosophy has been overlooked within recent debates concerning Logical Empiricism’s relation to the philosophy of biology. (shrink)