566 EXPEEIMENT STATION RECORD. 



225-244). — Feeding experiments with laboratory animals (dogs) are described 

 from whicb tbe author concludes that vegetable proteins are equal to animal 

 proteins in supplying essential amino acids, provided the protein of the bran is 

 rendered available and a sufficient variety of plant food is supplied. 



The specific heat of muscle protein and its significance with regard to the 

 heat of combustion, O. Krummacher (Ztsclir. Biol., 65 (1915), No. 7-S, pp. 

 355-3GJ}). — The author reports a number of measurements of the specific heat 

 of muscle protein from which it is deduced that its heat of combustion at 37° C. 

 is 0.15 per cent greater than at 17°. 



The digestion and absorption of protein and fat in normal and depan- 

 creatized animals, E. W. H. Cruickshank (Biochem. Jour., 9 {1915), No. 1, 

 pp. 138-155). — In feeding experiments with laboratory animals (dogs) the ab- 

 sorption of nitrogen was studied in the case of normal animals given low and 

 high protein and low and high fat diets. The variations from these results 

 when the animal was partially depancreatized, totally deprancreatized, and 

 when raw pancreas was added to the diet were also determined. 



The results obtained showed that the removal of the pancreas caused an imme- 

 diate and serious disturbance of the digestion of both protein and fat. 



The metabolism of creatin and creatinin. — VII, The fate of creatin when 

 administered to man, V. C Myers and M. S. Fine (Jour. Biol. Chem., 21 

 {1915), No. 2, pp. 377-381). — Two feeding experiments are described in which 

 the authors served as subjects. Living on meat and meat extract free diets for 

 12 and 13 days, they Ingested 1 gm. of creatin on the seventh day and increased 

 the amount until on the eleventh day 5 gm. was taken. From the increased ex- 

 cretion of creatinin in the urine, it is concluded that the increase in the creatinin 

 excretion actually comes from the administered creatin. 



The metabolism of creatin and creatinin. — VIII, The presence of creatinin 

 in muscle, V. C. Myeks and M. S. Fine (Jour. Biol. Chem., 21 {1915), No. 2, 

 pp. 383-387). — Results are reported of analyses to determine the creatinin con- 

 tent of fresh muscle from the rabbit, cat, and dog, and from human bodies. 

 The authors conclude that these results strongly support the view held by others 

 and themselves that the urinary creatinin originates chiefly in the muscle tissue. 



The metabolism of creatin and creatinin. — IX, The creatin content of the 

 muscle of rats fed on isolated proteins, V. C. Myers and M. S. Fine {Jour. 

 Biol. Chem., 21 {1915), No. 2, pp. 389-393).— In this paper data are given show- 

 ing the creatin content of the muscle of rats fed on isolated proteins (casein, 

 edestin, and lactalbumin). The results indicate, in the opinion of the authors, 

 that the creatin content of rat muscle varies within comparatively narrow 

 limits, and that the concentration of muscle creatin is only slightly influenced by 

 feeding proteins containing varying quantities of arginin. 



Does the cholesterin of the diet exert an influence on the excretion of 

 cholesterin in the bile? L. D'Amato {Biochem. Ztschr., 69 {1915), No. 3-4, pp. 

 217-224). — Feeding experiments are reported in which dogs having an artiflcial 

 gallic fistula were maintained on a diet rich in lipoid material. A constant, 

 although very small, increase in bile cholesterin and bile salts was noted. 



Bodily changes in pain, hunger, fear, and rage, W. B. Cannon {New York 

 and London: D. Appleton d Co., 1915, pp. XIII +311, figs. 39).— This book brings 

 together and discusses the results of recent investigations in this field of 

 physiology. The chapters on the effect of the emotions on digestion and the 

 nature of hunger are of special interest to students of nutrition. 



A study of prolonged fasting, F. G. Benedict {Carnegie Inst. Washington 

 Put). 203 {1915), pp. 416, pis. 7, figs. 46). — This publication reports observations 

 made upon a human subject who underwent a continuous fast for 31 days. 



