With publication of Marx's manuscripts and excerpts including his extracts from numerous books on natural science and mathematics as a part of MEGA (Marx-Engels-Gesamtausgabe) a new stage begins in studies of Marx's philosophy, political economy and methodology. The sources of Marx's philosophical method can’t be focused on German classical philosophy only and his method of research can't be reduced to materialistic dialectics alone. Marx was in mainstream of scientific life of his epoch in whole. His research approach was influenced not only by philosophy, but also by methodology of classical political economy and natural science as well. Admitting the theorization methods of the XIX century science Marx reasoned consonant with the naturalists of that era. That fact predetermined the destiny of alienation concept in the Capital, which became irrelevant as key element of Capital’s structure.