Bøger af G. H. Parker

The relation of the central nervous system and neurohumors as factors in the chromatophore reactions of the Dogfish and the Killfish, revealing the two functions are interdependent.

Originally published in 1932, this book examines how hormones and nervous impulses affect the body, with special reference to animals with colour-changing abilities. Parker gives examples from various areas of the animal kingdom to demonstrate how the stimulation of certain sensory organs and nerves can produce very different effects.