Recent progress in our knowledge of the physiology of alimentation has been characterized in particular by a better insight into the mechanism of the secretion of the digestive glands. For more or less obvious reasons, the production and properties of the gastric juice have experienced the greatest elucidation. Pawlow's epoch-making observations have been followed by numerous others that help to make clear the functions of the various digestive secretions and the activities of the secretory apparatus which produces them.
Much has been written about the physiology of the bile; but the literature of the subject still abounds in contradictory statements involving some of its fundamental features. There is, accordingly, a peculiar and timely appropriateness to a renewed investigation of the problems of the bile and biliary secretion such as has lately been undertaken in the Institute of Physiology at University College, London.5 Under Starling's leadership it has been shown,