DAIRY FARMING DAIRYING AGEOTECHNY. 369 



A gasoline heated colony brooder house, J. E. Rice and R. C. Lav/ry (Xew 

 Yoih- Cornell «S7«. Bid. .i-'/d. in>- 137-116, figs. 22, plans 7). — Detailed plans are 

 given for the construction of a brooder house and heating appliances using 

 gasoline ;is fuel, which have given good results. Data are also included regard- 

 ing the evolution of gasoline heaters, the construction, operation, and compara- 

 tive value of different burners, and related (luestions. 



In the authors' opinion tliere is no danger in operating a gasoline burner pro- 

 vided ordinary care is observed. " The conunon points of error often resulting 

 disastrously are: («) Allowing too much gasoline to run into the generating 

 cup; {h) applying a match to the generating cup before the control valve is 

 closed; (r) attempting to light the burner after it has been blown out by the 

 wind or in some other manner and the bottom of the burner box is covered with 

 gasoline."' 



New poultry appliances, J. E. Rice and 11. C. Lawry {Sew York Cornell >S7«. 

 Bui. 2-i8, pp. 20o-228. fiys. 37). — Detailed descriptions are given of a number 

 of poultry appliances, including a trap nest, a feed and a gravel hopper, feed 

 supi)ly can, egg distributing table and carrying box, combination ci-ate foi- eggs 

 and dressed poultry, water pan and cover, device for carrying kerosene oil to 

 incubator cellar, catching hook, chicken feed trough, a removable floor for 

 chicken shelter, and a system for keeping laying records. 



Different methods of preserving eggs, R. Nourisse (Les Divers Procedes de 

 Conserrutioii dcs Ocufs. Paris: Societe d'Editions Techniques. 1907; rev. in 

 HiKj. Monde et halt, 1 (1907), No. 5, pp. 222, 23.3).— The preservation of eggs 

 liy cold storage and by different preservative solutions, evaporated eggs, and 

 related questions are considered. 



DAIRY FARMING— DAIRYING— AGROTECHNY. 



Feeding sugar beets and sugar-beet pulp to dairy cows, R. W. Clark 

 (rtali Sin. Bui. 101. lip. l-j9-li;.j, dgiiis. 2). — In experiments on the feeding of 

 sugar beets, the quantity of beets fed was small at the l)eginning l)ut grad- 

 ually increased until the cows, averaging about 1,100 lbs. in weight, consumed 

 30 to 40 lbs. of the beets each per day. The total ration per cow in the average 

 of the experiments of 2 years was 21 lbs. of alfalfa, 5.9 lbs. of grain, and 33 lbs. 

 of beets per day. The corresponding ration without beets was 2.5 lbs. of alfalfa 

 and 5.9 lbs. of grain. The cows produced a little more milk and butter fat on 

 the ration with beets than on that without them. The food cost of the milk 

 was 77 cts. per hundred pounds and of the l)utter fat 18.9 cts. per pound with 

 the former ration, wherea.s it was .jO cts. per hundred pounds for the milk and 

 12.8 cts. per pound for the butter fat with the latter ration. The milk flow was 

 maintained as well with one ration as with the other. 



In similar experiments with beet pulp, cows consuming 25 lbs. of alfalfa, 5.3 

 lbs. grain, and 28 lbs. of pulp each produced milk at 49.2 cts. per hundred pounds 

 and butter fat at 12.9 cts. per pound, whereas on the same ration without pulp 

 they i)roduced milk at 44 cts. i)er hundred pounds and butter fat at 12.3 cts. per 

 pound. 



From his exjteriments the author concludes that (1) sugar beets and beet 

 pulp for dairy cows are nearly ecpial in value; (2) the milk from beet and pulp- 

 fed cows was a trifle higher in butter fat, the increased percentage being very 

 small, and (3) the milk flow and daily yield of butter were maintained as well 

 without beets and pulp as with them. 



Feeding different amounts of g^ain to dairy cows, R. W. Clark (Utah i^ta. 

 Bui. 101, pp. 179-188). — Cows averaging 1,178 lbs. in weight produced more milk 

 and butter fat on a ration of 12 lbs. of alfalfa and 15 lbs. of grain per day than 



