The proteins of the hen's egg are classical objects of chemical and biochemical research, partly because of the ready availability and practical importance of the egg, but also because of its great scientific interest. As a consequence, the state of…

A great part of our modern knowledge about the structure and composition of proteins originates from the analysis of the products formed by their hydrolysis. Since Braconnot, in 1820, hydrolysed gelatin with dilute sulfuric acid, proteins have been hydrolysed with…

The importance of phosphorus agriculturally, bas become commonplace to agriculturists. The functions, role, and forms of this element in soil have received favourable attention; yet, despite searching investigations there is still much lacking in our knowledge which would enable a…

The cultivation of the Timothy plant as a forage crop has been practised in various countries particularly in Canada and the United States of America for a considerable length of time. As such a knowledge of the variation in the…

The importance of phosphorus in plant nutrition has been recognized since the middle of the nineteenth century, when the analysis of plant ash showed the presence of phosphates and other inorganic salts, and the use of phosphorus-containing manures and fertilizers…

Research with the domestic fowl has played an important part in the development of knowledge in fundamental endocrinology. The experiments of Hunter with domestic fowl in 1749 appear to constitute the first experimental demonstration of what would now be described…

Cellulose is attacked and decomposed to simpler chemical compounds by a host or microorganisms in a variety or natural processes. In this manner, a very large part of the carbon of decaying vegetation is reconverted into forms utilizable by other…

The methods for determining the lysine content of purified proteins are still not entirely satisfactory, notwithstanding the many investigations which have been made since Osborne and Mendel(1) in 1914 first demonstrated its essential role in metabolism. Furthermore, our knowledge of…

Knowledge o£ the importance or a nutritional factor in the etiology of rickets may be said to date from the pioneer work of Mellanby in 1919. The therapeutic value of fish oils tor rickets. although recognized for centuries~ was shown…

The indefinite knowledge of the constitution and interrelation of the cell wall components has led to the development of highly empirical methods for their estimation. After the removal of the soluble constituents from finely ground plant material with suitable inert…