268 EXPEEIMENT STATIOIT EECOED. 



[Results of the examination of stock feeds], W. D. Saunders (Ann. Rpt. 

 Dairy and Food Comr. Va., 4 {1911-12), pp. 67-99). — Results are given of the 

 examination of stock feeds, misbranded, adulterated, or otherwise illegal. 



Feeding stuffs (Ber. Grossh. Bad. Landw. Vers. Anst. Augustenh., 1912, pp. 

 18-35). — Analyses are given of the pressed cake and meal of the following 

 materials: Peanut, coconut, linseed, com, poppy seed, palm nut, rape seed, 

 sesame, soy bean, and sunflower seed. 



Fresh meat supply of western Norway, R. M. Rasmusen {Daily Cons, and 

 Trade Rpts. [U. S.], 16 {1913), No. 275, p. 958).— It is reported that the market 

 for fresh meat is growing rapidly, owing to the industrial expansion, and that 

 due to the high prices prevalent for the past few years stock raising is being 

 revived. The natural conditions about Bergen are deemed unexcelled for stock 

 raising, especially sheep. 



Annual meeting of the Cattle Raisers* Association of Texas {Cattle Raisers 

 Assoc. Tex. Proc., 37 {1913), pp. 169). — A compilation of addresses and discus- 

 sions relating to the cattle industry of Texas, and including the by-laws, rules 

 and regulations, and list of members of the Cattle Raisers' Association of Texas. 



A comparison of the observed and computed heat production of cattle, 

 H. P. Abmsby {Jour. Amer. Chem. 80c., 35 {1913), No. 11, pp. 1794-1800).^ 

 CJalorimetric investigations were made upon herbivorous animals, and in par- 

 ticular upon ruminants, to determine the difference between the actual and 

 computed heat production. Previous experiments with camivora and man 

 had shown a close agreement, but it was thought that the physiological dif- 

 ferences in the digestive operations of the ruminant might introduce factors 

 tending to alter these calculations. Observations made during 8 years, 1902 

 to 1909, inclusive, embracing 57 experiments covering 48 hours each, are re- 

 ported. 



The results of these investigations show an average difference in the ob- 

 served and computed heat production of cattle of -fO.4 per cent, which corre- 

 sponds very closely to results of previous investigations. It is concluded that 

 " the same equivalencies between chemical energy, heat energy, and mechanical 

 energy obtain In the bodies of herbivorous animals as In those of carnlvora or of 

 man, and, as a rule, elsewhere in nature." 



Studies of the endogenous metabolism of the pig as modified by various 

 factors, E. V. McCollum and D. R. Hoagland {Jour. Biol. Chem., 16 {1913), 

 No. 2, pp. 299-325). — This article is discussed under 3 headings, as follows: 



I. The effects of acid and hasic salts, and of free mineral acids on the endog- 

 enous metal)olism (pp. 299-315). — In these experiments young pigs were 

 brought to their lowest level of nitrogen elimination through several weeks of 

 starch feeding. Daily analyses were made of samples of urine for the total 

 creatinin, creatin, ammonia, and urea nitrogen. The author's conclusions are 

 summarized as follows: "The endogenous metabolism of the pig reaches its 

 lowest level when the animal has an abundant supply of carbohydrates to- 

 g^±ier with a salt mixture of an alkaline character. The total output of 

 nitrogen derived from endogenous sources can be greatly increased without 

 changing the output of creatinin. The additional nitrogen which is eliminated 

 on an acid over what appears on an alkaline diet is in the form of ammonia. 

 The animal is not able to use the nitrogen of the urea fraction to neutralize 

 the acids present in the diet, but draws additional nitrogen from the tissues 

 for ammonia production." 



II. The influence of fat feeding on endogenous nitrogen metatolism (pp. 

 317-320). — "Feeding fat as the sole source of energy does not lead to a sus- 

 tained rise in the nitrogen output of pigs which have been reduced to their 



