POODS HUMA^Q- NUTEITION. 663 



of a trypsin solution, under like conditions, and the rate of digestibility of the 

 two samples determined. The results obtained showed that the digestion of the 

 dried milk, although no more rapid than that of the raw milk, was in the end 

 more complete. 



The comparative effect of light and dark meat upon the excretion of uric 

 acid and other nitrogenous constituents of urine, A. von Siewekt and E. von 

 Zebrowski {Ztschr. Klin. Med., 75 (1912), No. S-.'f, pp. S31-S58, figs. 7; ahs. in 

 Zentbl. Expt. Med., 2 (1912), No. 16, p. 72//).— With 5 men as subjects, chicken 

 breast as a representative white meat and fillet of beef as a representative dark 

 meat were added to a uniform purin-free diet. 



The same increase in the uric acid curve resulted whichever sort of meat 

 was eaten. The total amount of uric acid excreted was also the same with the 

 two kinds of meat. In the case of white meat this excretion was completed in 

 2 or 3 days and in the case of dark meat in from 4 to 7 days. This variation 

 in time, which suggests a marked difference in judging the two sorts of meat, 

 may be due to a slower cleavage of the purins of dark meat or to a slower pas- 

 sage through the kidneys of the nitrogenous materials which it furnishes. 



The results are discussed with reference to the treatment of gout. 



Contribution to the physiology of carbohydrate in the body — changes pro- 

 duced in the cells of the parenchymous organs by carbohydrates introduced 

 into the body in excess, D. P. Geiniew (Arch. Sci. Biol. [St. Petersl).], 17 

 (1912), No. 3, pp. 24O-243). — The results of experiments with small laboratory 

 animals are reported and discussed in which it was observed that the introduc- 

 tion of excessive amounts of carbohydrate into the body produced distinct and 

 characteristic histological lesions. The cellular protoplasm as well as the nuclei 

 of the cells was affected. 



The authors conclude that carbohydrates not only contribute to the heat pro- 

 duction of the organism, but also take part in the building up of the tissues. 

 It is probable that the carbohydrates are combined in the nuclei with some lipoid 

 substance as is the case in the liver. Glucose circulating in the blood probably 

 stimulates the functions of the suprarenal capsules. 



The effect of sugars on digestion, B. Thomsen (Hoppe-Seyler's Ztschr. 

 Physiol. Chem., 84 (1913), No. 7, pp. 425-436, pi. 1). — A number of experiments 

 are described, showing the effect produced upon the secretion of digestive juices 

 by the administration of sugar with the food in the case of animals having 

 duo<lenal and gastric fistulas. 



The results obtained show cane sugar to have no direct effect upon gastric 

 secretion. It also does not influence pancreatic or biliary secretion. It pro- 

 longs gastric digestion by its action through the small intestine in lengthening 

 the intervals between the emptying of the stomach, during which time the bile 

 and pancreatic juices are being secreted. Cane sugar is almost completely 

 absorbed in great quantities in the small intestine, and by preventing the absorp- 

 tion of other products, prolongs the action of hydrochloric acid. 



Measure of the glycolytic power by the study of nitrogen elimination, H. 

 Magne (Compt. Rend. 80c. Biol. [Paris], 74 (1913), No. 16, pp. 947, 948). — The 

 ingestion of 20 gm. of glucose by a fasting man produced a marked decrease in 

 the protein catabolism, as was indicated by the variations in the amount of 

 urinary nitrogen. The same effect was produced by the subcutaneous inocula- 

 tion of fasting animals with small amounts of glucose. 



It is proposed to determine the limits of sensibility of the method in its appli- 

 cation to the study of glycolytic insufficiency. 



The value of seasoning in the diet, A. Gigon (Klin. Ther. Wchnschr., 44 

 (1912), No. 44, pp. 1281-1285; ahs. in ZentU. Physiol., 26 (1912), No. 25, p. 



