The search for a greater knowledge of the physiology and biochemistry involved in gastric secretion has advanced very slowly for many years. Many of the possible roads of investigation have been blocked waiting for progress in special fields. However, much…

The experiments to be reported in this treatise were carried out with the object of contributing to the general knowledge of the human disease, acute diffuse glomerulonephritis. Albino rabbits were used in all experiments. These animals exhibit many important anatomical…

It is known that the bone consists of crystals of a Calcium phosphate complex held together in a matrix derived from connective tissue. The phosphate salts are responsible for the firmness and resistance which are two of the main characteristics…

To interpret the permeability phenomena which are exhibited by cellulose, a knowledge of its structure and certain physical properties is essential. Although the present study is concerned with cellophane, which is a regenerated form of cellulose, it is preferable first…

It is now generally recognized that the processes involved in a chemical reaction are frequently not as simple as the stoichiometric equation would indicate, but consist rather of a series of elementary reactions of simple order; the over-all reaction observed…

The potentialities of catalysis were foreseen by Ostwald when he prophesied that a scientific knowledge and control of catalytic phenomena would lead to immeasurable results technically (1). This prophecy has been fulfilled, for to-day the importance of catalysis in science…

The factors in nature which influence population changes are so numerous and so complex that it seems that the only hope of understanding their interrelations lies in a thorough knowledge of how each factor operates separately upon the population. Having…

This investigation was carried out at the instigation of Dr. W. V. Cone in the attempt to discover chronic pathological changes in oligodendroglia. Knowledge of chronic changes in the oligodendrocytes has not been greatly advanced m the past twenty years.…

The understanding of the functions of a certain portion of the cortex ultimately is dependent on a knowledge of the connections or interrelationships of that particular cortex. Consequently, the visual cortex and the auditory area are better understood because of…

Alfred North Whitehead, “the latest and the greatest of the Cambridge Platonists”, once said that if our ancestors had been wise positivists there would be no civilization today. It is not difficult to discover the meaning of this remark, and…