766 EXPERIMENT STATION RECORD. 



))iocitiii Mnil ovulecitbin. The lecithin phosphorus appeared to be resorbed aiul 

 deposited. 



Influence of lecithin upon calcium and magnesium excretion, A. Loeb 

 (Intcrnat. Beiii: Path. u. Ther. Erndlirungsstor. Stofftc. u. Verdauutigskrank., 

 3 {1911), No. 2, pp. 235-237; ahs. in Chem. Abs., 6 {1912), No. 2, p. 2-^2).— In 

 experiments with a man fed lecithin the phosphoric acid appeared to be re- 

 tained, but this was not the case with the calcium and magnesium. Inorganic 

 lione substance was not increased. 



Experimental investigations concerning the significance of lipoids in 

 nutrition, W. Sticpp {Ztfivhr. Biol., 57 (1911). No. 5, pp. 135-170). — Confirnung 

 earlier work," the author found that white mice could not be kept alive on a 

 diet of rice and milk subjected to thorough extraction by alcohol and ether, 

 and that the addition of salts to such a diet produced no improvement. How- 

 ever, when the evaporated extract was added, and particularly extract from 

 substances containing an abundance of material soluble in ether and alcohol, the 

 mice throve. 



The addition of butter, tripalmatin, tristearin or triolein, lecithin or chlores- 

 terol to the extracted food did not sustain life, but with the addition of an 

 alcoholic extract of 200 cc. of dried skim milk to each 100 gm. of extracted 

 food the mice were in normal condition at the end of 6 weeks. 



Boiling the milk had an effect not clearly explained. In half the tests the 

 addition of the extract from boiled milk did not sustain life. 



While the author realizes the complexity of the whole subject, his experi- 

 ments lead him to conclude that regarding the substances in question only this 

 much miay be said, that since they are soluble in alcohol and ether and are 

 not fats, they fall under the head of lipoids. For the physiology of digestion 

 the experiments are significant in so far as they indicate clearly that it is not 

 enough to judge a diet purely by its caloric value. 



The metabolism of the hypophysectomized dog, F. G. Benedict and .7. 

 HoMANS {JoHi: Med. Research, 25 {1912). No. 3, pp. .'i09-502, pi. 1, dgnis. 8).— In 

 general, when the hypophy.sis was removed a general tendency to retard the 

 normal growth of the animal was observed and gain in weight was principally 

 due to the deposition of fat. There was a tendency to slightly lowered body 

 temperature, as well as a marked fall in pulse rate which occurred a few 

 days after operation and then continued, and a fall in the respiration rate 

 approximately parallel and similar to that of the pulse rate. The total metabo- 

 lism as measured by the carbon dioxid production was decidetlly lowered. 



The small respiration apparatus used in the experiments is described. 



The influence of moderate changes of temperature of the surrounding 

 atmosphere on the respiratory exchange of infants, A. Schlossmann and 

 H. MuRSCHHAUSEE (Biochem. Ztschr., 37 {1911). No. 1-2, pp. 1-22. dgms. 12; 

 abs. in Jour. Chem.. Soc. [London], 102 {1912). No. 591, II, p. 57).— It was 

 found that moderate changes of temperature exercised practically no influence 

 on the respiratory exchange. 



The influence of crying on the respiratory exchange of infants, A. Schloss- 

 mann and H. Murschhauser {Biochem. Ztschr., 37 {1911). No. 1-2, pp. 23-29, 

 dgms. 2; abs. in Jour. Chem. Soc. [London], 102 {1912), No. 591, II, p. 57).— 

 When the respiratory exchange of infants was studied by means of a calorimeter 

 during periods of rest and crying, it was found that crying increased the con- 

 sumption of oxygen 44 per cent and the carbon dioxid excretion 59.4 i>er cent. 



The secretion, salt content, and reaction of sweat, C. Kittsteiner {Arch. 

 Hyi).. 73 {1911), No. S-Jf, pp. 275-306, dgms. 3). — The author and other persons 



"Biochem. Ztschr., '22 (19W), p. 452. 



