1917] ANIMAL rKODUCTION. 769 



5.54 lbs. of feed per pound of sain, and the no-milk-or-meat chicks weighed 9.86 

 lbs. at a cost of 15.1 lbs. of feed per pound of gain. The mortality in the three 

 lots was 13.4, 22, and 34 per cent, respectively. 



Live stock of the farm. — V, Pigs and poultry, edited by C. B. Jones {Lotv- 

 don: The Grcsftam Publishing Co., 1916, vol. 5, pp. XI +269, pis. 41, figs. 17).— 

 This treats of pigs and poultry, as to breeds, feeds, management, marketing, and 

 diseases. 



Live stock of the farm. — VI, Bees, goats, dogs, ferrets, asses, and mules, 

 edited by C. B. Jones (London: The Greshain Publishing Co., 1916, vol. 6, pp. 

 VIII+199. pis. 19, figs. 13). — The treatment is similar to the part noted above. 



[Swiss live stock industry], A. Borgeaud, J. Frey, and D. Bouret (Vie Agr. 

 et Rurale. 6 (1916), No. 36. pp. 16^-180, figs. 12).— In this special number, de- 

 voted to Swiss agriculture, pages 164-175 treat of the cattle industry, breeds of 

 cattle, and cooperation among cattle raisers; pages 176-180, of goats (breeds 

 and breetling). 



Statistics of Swiss live stock industry (Ergcb. Schweiz. ViehzUhl, Kanton 

 Zurich. 1916, pp. 31, figs. 2). — Data covering several years are presented as to 

 the number and kinds of animals owned in the various cantons. From 1911 to 

 1916 there was practically no change in the number of horses. Cattle increased 

 1 per cent, and smaller animals over 9 per cent. 



Proceedings of the nineteenth and twentieth annual conventions of the 

 American National Live Stock Association (Proc. Amer. Nat. Live Stock 

 Assoc., 19 (1916), pp. Ill, pis. U; 20 (1911), pp. 202, pis. 14).—The proceedings 

 and addresses are reported of these conventions, held respectively, at El Paso, 

 Tex., in January, 1916. and Cheyenne, Wyo., in January, 1917. 



Inbreeding, A. B. Bruce (Jour. Genetics, 6 (1917), No. S, pp. 195-200) .—On 

 the assumption that inbreeding is essentially " self-fertilization " in a greater 

 or lesser degree, and that, in each generation, selfing and mating at random 

 take place in a fixed ratio, the author propo.ses general formulas to express not 

 only the array Init also the genetic constitution of the individuals of which 

 the family under investigation is composed. 



Report on cattle feeding experiments conducted at the schools of agricul- 

 ture and experiment stations at Cedara, Natal, and Potchefstroom, Transvaal 

 (Union So. Africa Dept. Agr. [Pub.] 15 (1916), pp. 40, figs. 22).— The experi- 

 ments reported were made on from 10 to 16 head of three types of cattle to 

 determine whether a profit could be obtained by using feeds produced on the 

 farm. The feeds covered a wide range of roughage, maize meal, and peanut 

 cake. 



With 6-year-old cattle, profits were made by grass fattening, but the addition 

 of maize meal resulted only in a reduction in profits. 



The results with 3-year-old cattle indicated that their raising and fattening 

 with local feeds appears to be a remunerative business. It is believed that 

 the future of the beef cattle industry in South Africa will be the fattening 

 of younger cattle of this class. 



In experiments with superannuated work oxen with feeds easily produced 

 on South African farms, profits were returned at present prices. Because of 

 the scarcity at present in the London market there was a profit in such cattle 

 where extra feeding had produced a covering of fat. In fattening the old oxen 

 better gains were obtained with animals possessing a dash of improved blood. 



Feeding experiment with oil-extracted palm kernel meal and undecorti- 

 cated earthnut cake, J. Hendrick and W. J. I'kofeit (North of Scot. Col. Agr. 

 Bui. 21 (1916). pp. 10). — In continuation of work previously reported (E. S. It., 

 34, p. 566), an experiment was carried out to compare the value of oil-extracted 

 palm kernel meal and undecorticated peanut cake with lin&*eed cake, and also 



