ANIMAL PRODUCTION. 563 



limited application in the case of extreme temperatures. In general, the heat 

 regulation is less efficient with small animals at low temperature than with 

 large animals at high temperature. 



An increased rectal temperature in childhood, E. MoBO (Monatsschr. 

 Einderheilk., 11 (1913), No. 9, pp. 480-438; aU. in ZentU. Physiol., 27 (1913), 

 No. 22, p. 1185). — The author found that even in normal children the rectal body 

 temperature was usually increased after exercise with the legs and lower part 

 of the body. As shown by measurements, the axilla temperature would not be 

 so raised. If the work was done with the arms and upper part of the body, the 

 increased temperature was noted in the axilla and not in the rectum. 



The effects of light upon metabolism, L. Pincussohn {Berlin. Klin. 

 Wchnschi\, 50 {1913), No. 22, pp. 1008, 1009; aJ)S. in ZentU. Physiol, 27 {1913), 

 No. 24, p. 1309). — In experiments with laboratory animals (white dogs) it was 

 found that in the light period (arc light, 500 candlepower) the excretion of 

 allautoin was much diminished, while the urea excretion remained unchanged, i 

 Oxalic acid excretion was increased. . *^ 



ANIMAL PRODUCTION". 



Principles of feeding, O. Kellneb {Grundziige der F-utterungslehre. Berlin, 

 1912, 4- <i(l; ^'ev- <i^^d enl., pp. VII+231). — This edition of this book treats ot 

 the general principles involved in the feeding of farm animals, the composition, 

 digestibility, and value of feeding stuffs, the characteristics of various feeding 

 stuffs, and their preparation, conservation, and economical use. 



The nutritive values of organic and inorganic phosphorus, E. B. Forbes 

 {ProG. Soc. Prom. Agr. Set., 34 {1913), pp. 23-^2).— This paper treats of the 

 nutritive limitations imposed by the differences in the chemical relationships 

 of phosphoric acid in feeds. It is the purpose to determine whether organic 

 and inorganic phosphorus compounds can serve equally well all of the require- 

 ments of the body for phosphorus under all conditions of life. 



After citing the results of previous investigators and of work conducted by 

 the author, it is concluded that " the character of the evidence does not war- 

 rant final conclusions in regard to this problem. We are unable to say 

 whether the lack of harmony in results with dogs, rats, and mice is due to 

 differences in the nutritive processes of these animals or to differences in the 

 purity of the organic phosphorus compounds used, or to ill-considered or 

 incomplete experimental methods. . . . The problem now seems to take the 

 form of a question as to whether we shall regard organic phosphorus com- 

 pounds as of superior nutritive value because of the chemical relationship 

 of their phosphoric acid or because of the presence of other unknown sub- 

 stances of value associated with them in natural feeds." 



A bibliography of 36 references is appended. 



Fish meal, E. Haselhoff {Fiihling's Landw. Ztg., 63 {1914), No. 4, pp. 137- 

 143). — Experiments conducted at the experiment station at Harleshausen indi- 

 cate that, providing it is of good quality, fish meal forms a desirable supple- 

 mentary feeding stuff for farm animals, especially for pigs. Fish meal is 

 produced from fish offal and condemned whole fish. Owing to the varied 

 nature of its raw material and its methods of preparation, fish meal varies 

 very widely in its composition as shown by the following analyses : Water 

 from 5.9 to 18.91 per cent, crude protein 38.83 to 58.96, digestible protein 30.43 

 to 54.52, fat 1.55 to 14.03, phosphate of lime 7.8 to 36.16, salt 0.7 to 20.1, ash 

 20.53 to 45.07, and sand 0.1 to 6.05 per cent. 



It is said that if fed in too large quantities or containing too high a per- 

 centage of oil the meal is liable to give a fishy taste to the meat product, but 



