256 EXPERIMENT STATION EECORD. 



A nutritional index for school children, A. W. Tuxfobd {Pub. Health 

 [London'], 21 {191^), No. 11, pp. 377, 378).— This article discusses a nutritional 

 index calculated from the body weight and height, which is designed for use in 

 comparing children in different locations as to their general nutritional con- 

 dition. 



Studies of the influence of diet upon growth, H. Aron (Berlin. Klin. 

 Wchnschr., 51 {191Jt), No. 21, pp. 972-977. figs. 10).— A digest of data in which 

 the work of others is reviewed as well as previous work by the author which 

 has already been noted (E. S. R., 30, p. 365). 



Study of the effect of different foods upon the secretion of digestive fer- 

 ments, O. WoLFSBEitG {Hoppe-Seyler's Ztschr. Physiol. Chem., 91 (1914), No. 

 5, pp. SJiIt-371, fig. 1). — Some experiments were carried out with dogs, in which 

 a large number of different foods were employed. The following conclusions 

 are drawn : 



In the case of meat, bouillon, and milk, secretion was found to be propor- 

 tional to the amount of food, while with vegetables, bread, butter, and sugar, 

 no great increase in secretion was noted even when the quantity of these foods 

 was doubled. Extractives produced increased secretion, due to stimulation of 

 the hormones of the membrane of the pylorus. This stimulation was believed 

 to be of chemical nature and was possible only when the extractives remained 

 for some time in the stomach. Under similar conditions with the same food the 

 amount of secretion was approximately constant. Even with a twofold secre- 

 tion the time of emptying the stomach was not doubled and often this time was 

 not changed. 



Experimental studies of the metabolism of nucleosids, guanosin, and 

 adenosin, I, S. J. Thannhauseb; II, S. J. Thannhausee and A. Bommes 

 (Hoppe-Seyler's Ztschr. Physiol. Chem., 91 (19U), No. 5, pp. 329-335, 336- 

 343). — The results are reported of a large number of experiments carried out 

 with men in good health, and also with rabbits, which show that uric acid is 

 readily formed from a purin base. After subcutaneous injection of guanosin 

 and adenosin, a corresponding increase in uric acid excretion was noted. 



Studies on the digestion of the protein of cooked meat in the case of dogs, 

 E. ZuNz (Internat. Beitr. Path. u. Ther. Ettulhrungsstor., Stoffic. u. Yer- 

 dauungskrank., 5 (1914), No. 3, pp. 265-286). — In the experiments here reported 

 laboratory animals (fasting dogs) were fed upon a meat diet of known nitrog- 

 enous content. After being killed, at from 1 to 8 hours after the ingestion 

 of the meal, the contents of the fundus, pylorus, and upper part of the intestinal 

 tract were isolated and digested with dilute hydrochloric acid. 



Considerable data are given regarding the amounts of protein cleavage 

 products present, but the greater part of the article is devoted to the dis- 

 cussion of the relative value of two methods for separating the soluble nitrog- 

 enous matter from the materials not attacked by the acid and from the 

 accumulated proteins. 



Of the two methods studied, namely, filtration and centrifuging, the author 

 draws the conclusion that more rapid and correct determination of the nutritive 

 content of protein cleavage products is made by the latter method, when car- 

 ried out at a speed of 7.000 revolutions per minute. 



The excretion of creatinin by normal women, Martha Tracy and Eliza- 

 beth E. Clark (Jour. Biol. Chcni., 19 (1914). No. 1, pp. 115-117).— The results 

 of these exi>erimeuts, in which observations were made upon a number of 

 women kept " upon a strict creatinin- and creatin-free diet for two days or 

 longer," showed a creatinin coefficient below 8. This coefficent as a rule 

 apparently applies to women w^ho have no definite muscular work to perform. 



