[...] There is a great deal more to be done in the Canadian arctic. Large portions of the area between Alaska and Greenland are still blank on the biological map. Scientific activity in this region, with the exception of the…

Our knowledge of the fundamental mechanisms of gastric secretion is still incomplete. The cells which secrete acid or pepsin have been identified, but the secretory process is as yet unknown. Fortunately, certain of the factors which influence gastric secretion are…

An attempt has been made to advance the knowledge with respect to factors affecting fat and Vitamin A metabolism in the domestic fowl through a study of the effect of a saline extract of the anterior pituitary. An extended bibliography…

The original print is faded. The output is the best quality possible at this time. , The object of this investigation was to obtain certain fundamental information on the question of a possible lignin-carbohydrate union in wood and the nature…

A knowledge of the thickness of overburden is of utmost importance both in ore exploration and in disclosing underground structure. Owing to the cost of drilling and to the fact that geological features upon the earth's surface are not always…

[...] Within recent years silica gel has received considerable attention because of its use as a sorbent, catalyst and catalyst support. The sorption of about fifty materials on silica has been recorded (2). There is an analogy between gelation of…

The biological significance of certain pyridinium betaines, such as diphosphopyridine nucleotide and triphosphopyridine nucleotide, has been fully recognized. The vital importance of these substances in the life of organisms provided an impetus for extensive research in this field, with the…

The regulation of any fishery depends for its direction upon the knowledge of the biology of the fish involved. As the haddock has been one of the more important marine food fishes even before marine biological investigation was initiated in…

The use of P32 in biological investigation has contributed greatly to the knowledge of phosphorus metabolism. Soon after this isotope became available in the late 1930’s, many investigators studied the absorption, distribution and excretion of radiophosphorus in plants and animals.…

In sharp contrast to the wealth of chemical knowledge of the nature of the lipids of mycobacteria (Anderson 1940, 1942, Siebert 1950) is the scarcity of facts available to indicate the routes by which fats are metabolized by these organisms.…