... sources of energy, and components of the physical structure of the cell Today, we understand many aspects of the behavior of the cell and many fragments of the network, but not how it all fits together ... On the biological significance of the properties of matter: L J Henderson’s theory of the fitness of the environment Journal of the History of Biology, 29, 155–96 Fry, I (2000) The Emergence of Life ... of the primacy of carbonic acid and water in the environment and the importance of the buffer concept, he set about writing The Fitness of the Environment He claimed that he made no outline of...