ABSTRACT
With all the variety of existing opinion in bourgeois science on the question of the relationship of the physical and biological sciences, it is possible to distinguish among them two basic and mutually exclusive tendencies: either (1) attempts to identify the two, reducing biological phenomena to laws of a physical character, or (2) a sharp contrasting of the biological to the physical, as two opposite entities. In the latter case, by Uphysical" is understood the material forces of inorganic nature, or "mechano-physiological" factors at work inside the organism and reducible in the final analysis to the same mechanical laws of molecular motion:- while by "biological" is understood some vital forces of a non-material and non-spatial character, which "are neither the result nor the combination of physical and chemical-i.e., in the final analysis of mechanical phenomena."
