Modern studies in the history of science have two aspects. On the one hand, they are directed to the elucidation of facts and connections in the real history of science and, on the other hand, to the discovery of the general logic of history, and its general schemes and laws. This second aspect is essentially different from the first, and having a philosophical rather than historical-scientific character. We have sufficient grounds to assume that each one is indispensable to the other, and that the philosophical image of science is essentially involved in concrete historical studies.