ANIMAL PRODUCTIOISr. 169 



ligiii following the ingestion of food by the theory that the increase is a conse- 

 qnence of such movements is, therefore, not justifiable." 



Some observations on metabolism in connection with an experimental 

 march, C. II. Melville, W. W. O. Beveridge, and N. D. Walker {Jour. Roy. 

 Army Med. Corps, 19 {1912), No. 6, pp. 661-673, figs. 7).— Observations were 

 made of the body weight, the amount, nitrogen content, and energy value of the 

 food consumed, the liquids drunk, and the nitrogen eliminated in the urine and 

 feces in the case of 3 men taking part in the march. From a study of the 

 results obtained the authors deduct the following practical points : 



" If a man has to go short of water for 1 day the effect on the water available 

 for perspiration, that is, for temperature regulation, may persist even in a well 

 trained man for about 48 hours." Even if " a plentiful supply of water is avail- 

 able on the next day [it] will only tend to increase his urinary secretion, not to 

 redress at once the disturbance In water content of his dehydrated tissues." A 

 similar effect results from an uneven allowance of water. " It is extremely 

 important, therefore, to regulate the supply not only from day to day, but also 

 in the course of every day." 



The water supply of a man in an untrained condition needs more careful regu- 

 lation than that of a man in good physical condition. 



Report on two experimental marches carried out for the purpose of 

 deciding- a scale of field service rations; together with an. account of some 

 observations on nitrogen balance, etc. {London: Govt., 1913, pp. 64-\-i2'\, pla. 

 7). — This blue book gives full data regarding an earlier experimental march 

 (E. S. R., 25, p. 266) as well as the one noted above. 



ANIMAL PRODUCTION. 



Commercial feeding stuffs, W. J. Jones, Jr., et al. {Indiana St<i. Bui. 169, 

 pp. 71-326). — This reports analyses of the following feeds: Wheat bran, mid- 

 dhngs, shorts, low grade flours, mixed wheat products, rye middlings, buckwheat 

 bran, buckwheat middlings, buckwheat mixed feed, cotton-seed meal, cotton-seed 

 cake, cotton-seed hulls, linseed meal, linseed cake, distillers' dried grains, 

 brewers' dried grains, gluten meal, gluten feed, corn germ meal, hominy feed, 

 corn meal, com bran, dried sugar beet pulp, alfalfa meal, blood meal, beef 

 scrap, tankage, proprietary stock and molasses feeds, calf meals, poultry feeds, 

 and condimental stock and poultry feeds. 



There is included a synopsis of the Indiana feeding stuffs law, together with 

 a classification of feeding stuffs, and comments on the various feeds and their 

 manufacture. 



Use of the bitter acorn in the feeding of domestic animals, K. Courbet 

 {Bui. Agr. Alg^rie et Tunisie, 19 {1913), No. 13, pp. 273-279).— Bitter acorns 

 were subjected to a process of torrefaction and desiccation and thus rendered 

 available as a palatable and nutritive feed for domestic animals. The compo- 

 sition of the fresh acorns is reported as follows: Water 55.3, protein 2.5, fat 

 3.9, carbohydrates 34.8, crude fiber 4.4. and ash 1 p«r cent ; and the digestible 

 nutrients as protein 2, fat 3.9, carbohydrates 31.3, and fiber 2.7 per cent. 



Rations for farai stock {Bd. Agr. and Fisfierics [London], Leaflet 79, pp. 

 23). — This publication contains a general discussion of the principles of nutri- 

 tion and the compounding of rations. Rations applicable to British conditions 

 are given for dairy cows, both summer and winter feeding; for fattening cattle 

 and sheep: for calf feeding; and for ewes, pigs, work horses, and mares with 

 foal. 



On the question of the nitrogen retention from the feeding of urea, E. 

 Grafe {Hoppe-Seyler's Ztschr. Physiol. Chem., 86 {1913), No. 5, pp. 347-355).— 



