DAIRY FARMING DAIRYING. 775 



Cattle feeds, R. Harcourt (Ann. Rpt. Ontario Agr. Col. and Expt. Farm, 37 

 (IDJ I ), pp. 6D-71). — Analyses are reiwrted of soy beans, cotton-seed meal, dried 

 brewers' gi-ains, sborts, middlings, a proprietary bog feed, linseed cake, pea 

 nieal, apple pomace, and silage. 



The coming of dried beet pulp, U. J. Whitney ( Pacific Rural Press, S-'t 

 (1912), No. 3, pp. -'i9, 62, 63). — Attention is called to the valne of beet pulp as a 

 feed for live stock, and particularly the dried pulp which is being produced in 

 increasing quantity in tbis country. 



Potato greens as stock food, W. Dawson, Jr. (Daily Cons, and Trade Rpts. 

 \U. 8.], l.-j (1912), So. 2 IS, p. ;392).— According to a German authority, tbe 

 foiisul general reix)rts, iX)tato tops are not harmful to animals as is commonly 

 supposed. It is believed that the apparatus used for drying beets, potatoes, 

 and other products can be used for drying the iX)tato tops. 



Hides and ^kins (Chicago, 1912, pp. 15+2Jf7, pis. 11, figs. I'l). — This book 

 gives instructions for handling hides of the larger domesticated animals, from 

 the animal's back to the tanneiy door. It was written mainly for farmers and 

 local butchers. It is stated that hides from Chicago packers bring higher prices 

 than those of the same grade of animals from sources where tbe hide is not 

 properly handled. 



Regulations for animals on the German railways (Zenthl. Prcuss. Landio. 

 Kauimcni, 2 (1912), .Yo. 16, p. Ill; ubs. in Intcniat. Inst. Agr. [Rome], Bill, 

 liur. Agr. Intell. and Plant Diseases, 3 (1912), No. 6, p. /^C }) .—These regula- 

 tions relate to the care and feeding of animals during transiwrtation on Ger- 

 man railways, which were to take effect May 1, 1912. 



DAIRY FARMING— DAIEYING. 



A study of the metabolism and physiological effects of certain phosphorus 

 compounds with milch cows, II, A. K. Rosk (New York State Sta. Tech. liiil. 

 20, pp. 3-32, figs. 4)- — The work reported in this bulletin was made in order to 

 check the results of work previously noted (E. S. R., 18, p. 568), repeating 

 the work in such a way as to eliminate more of the variable factors. This was 

 effected by adjusting one of the animals used in the previous experiment to a 

 low phosphorus ration, very nearly identical to the one formerly employed, 

 and adding thereto the calcium salt of phytin. The technic of the work differed 

 in no essential way from the previous experiment. 



The results are summarized as follows : 



" In this, as in the former experiments, the organic phosphorus ingested was 

 eliminated very largely in the form of inorganic phosphorus by way of the 

 intestine, the amounts of phosphorus in the urine being very small. When 

 phytin was withdrawn from the ration, the decrease of phosphorus in the urine 

 was immediate; when phytin was added, a rise in phosphorus occurred after 

 a lag of 2 days. Phytin caused more phosphovus to be eliminated through the 

 kidney than did whole wheat bran. The long duration of the low-phosphorus 

 period did not in itself affect the phosphorus content of the urine nor the phos- 

 phorus balance. 



" The insoluble phosphorus of the feces diminished with decreasing amounts 

 of insoluble phosphorus in the rations, when the latter ranged above 14 gms. 



" The soluble organic phosphorus disajjpeared. very largely from the ali- 

 mentary tract. The apparent utilization was poorer in the low-phosphorus 

 periods and in the calcium phytate period than in the whole-bran period. 



" For maintenance of phosphorus equilibrium in this species of animal the 

 requirement would seem to be the amount of phosphorus eliminated in the milk 

 plus 26 mg. per kilogram of body weight; an excess over this amount causes 



