ABSTRACT

“& the environment if properly analysed is more decisive in determining growth than was formerly conceived possible. The biophysicist need not, therefore, look upon the organism exclusively as a self-controlling and self-perpetuating machine. He can view it also as a reaction-system, i.e. a set of reactions between one part of the world and the rest. & If we think of growth not as mere unfolding of what is already preformed but as a process of modification through the interaction of the organism and the environment, the original relative simplicity is not an insuperable objection to subsequent complexity.”