564 EXPEKIMENT STATION EECOED. 



meal containing from 2 to 4 per cent of oil may be safely fed. Salt should 

 not exceed 3 per cent. The phosphate of lime found in fish meal is deemed a 

 valuable adjunct in feeding animals. 



It is suggested that the following amounts may be given daily if the meal 

 is of good quality: Cattle 2 lbs. for every 1,000 lbs. live weight, pigs from i 

 to 2 lb. per head according to weight, and sheep from ^u to s lb. for every 100 

 lbs. live weight. 



[Feeding stufEs] {Maine Sta. Off. Insp. 60 {191J,), pp. .^i-SS).— Analyses are 

 reported of the following feeding stuffs: Cotton-seed meal and feed, gluten 

 meal and feed, linseed meal, distillers' grains, red dog flour, wheat middlings, 

 bran, and offals, and various mixed and proprietary feeds. 



Origin of our important domestic animals, H. W. Behm (Zool. Beob., 55 

 (1914), Nos. 2, pp. 33-40, figs. 2; 3, pp. 65-71, figs. 5).— This is a general article 

 treating of the origin and distribution of our common breeds of cattle, sheep, 

 goats, horses, and swine. 



Effects of inbreeding, H. Kraemer (Jour. Heredity, 5 (1914), No. 5, pp. 

 226-234)- — In this article the author reviews the theories advanced by Darwin 

 and others with regard to the effects of inbreeding in animals and points out the 

 wide diversity of opinion held by these investigators. He concludes that "con- 

 tinued inbreeding always must result in weakened constitution, through its 

 own influence." 



The determination of sex, P. J. Wester (Jour. Heredity, 5 (1914), No. 5, 

 pp. 207, 208). — The author reviews the investigations of T. Ciesielski in Lem- 

 burg with plants and animals on the determination of sex. Numerous experi- 

 ments were conducted with rabbits, dogs, horses, and cattle, a large number of 

 which, it is stated, served to verify previous studies with plants. It is con- 

 eluded that the sex of the progeny is governed by the condition of fecundation 

 and that sex in animals is determined by the age of the spermatozoa at the 

 time they unite with the ova. 



An editorial note appended calls attention to the fact that it is now believed 

 by many investigators that the determination of sex depends on the inheri- 

 tance of a Mendelian factor differentiating the sexes, and that microscopical 

 studies of the cell indicate that the presence of an accessory or " x " chromo- 

 some in the sperm or egg (usually the latter) is the deciding factor in some 

 species. 



The problem of the meat supply {Chamber Com. U. 8. A., Oen. Ser., Bui. 

 88 (1914), PP- 230-237, figs. 6). — This relates to the present situation with 

 regard to meat supply in the United States, causes of decrease, import and 

 export statistics, domestic and foreign sources, and suggestions as to the 

 problem of adjustment of conditions in the near future. 



Australia and New Zealand as sources of meat supply, A. W. Pearse 

 (Proe. Aincr. WarcJiouscDtcn's Assoc., 23 (1913), pp. 213-219). — Data are given 

 on the relative importance of these countries in supplying frozen meat to the 

 United States and other countries. 



The amount of bone in animals for the slaughterhouse, Tridon (Hyg. 

 Viande et Lait, 8 (1914), No. 1, pp. 18-22; abs. in Intermit. Inst. Agr. iRome'[, 

 Mo. Bui. Agr. Intel, and Plant Diseases, 5 (1914), No. 8, pp. 7/0//--'/06).— Investi- 

 gations made on calves and sheep indicate that the proiwrtion of bone to the 

 total weight of the animal varies inversely with the age, the quality, and the 

 weight of the animal. The proportion of bone was found to be very variable 

 and the weight of bone reaches and sometimes exceeds one-third of the total 

 weight of the animal. 



A comparison between the fat stock and the carcasses exhibited at 

 Smithfield Show, J. Long (Jour. Bd. Agr. [London], 21 (1914), No. 1, pp. 



