DAIRY FAEMING DAIRYING. 673 



Landbouio Afd. Ifooni cii tic Provincialc Bond ran Fokvcrccnigingcn. The 

 Hague, 1009, pp. 20, pla. 20). — This contains an account of the breeders' asso- 

 ciations of the province of North Holland, by L. T. C. Scheij, and measurements, 

 yields of uiillc, and other data of over 100 animals belonging to the associations, 

 by G. Nobel. 



[Live stock statistics of Argentina], A. B. Martinez (Ccnso Agropccuario 

 dc la Xacioii: J'rinicros Ri .■^iiltndos. La Industria Clanadcra. Buenos Aires: 

 Govt., IDOS, pp. 32). — The live stock statistics of different provinces in Argen- 

 tina are tabulated and compared with those of 1S95. Since 1895 there has been 

 an Increase of 2,605,339 cattle, 844,568 horses, 462,521 pigs, 8,550 asses and mules 

 and a decrease of over 18,000,000 sheep. 



Don't kill the laying hen, T. F. Potter {Doicncrs Grove, 111., IDOS, pp. 

 102, Jigs. 2!)).- — This boolv describes a method of selecting' laying and nonlaying 

 hens, and contains information on the causes which affect the laying qualities. 

 1'here are numerous illustrations which show the ovaries in normal and patho- 

 logical conditions. 



Note on an artificial incubator, A. Cartier {Bill. Econ, Indo-Chine, n. sen, 

 11 {1908), Xo. 75, pp. 700.-710, figs. 3). — This is a description of an incubator for 

 hatching ducks which is used in Annam, Indo-China. Layers of eggs are alter- 

 nated with layers of paddy in cylindrical baskets, which are also surrounded by 

 paddy. Directions are given in detail for the examination and management of 

 the eggs. 



DAIRY FARMING— DAIRYING. 



Experiments on the feeding of dairy cows, F. P. Walker (Durham County 

 Council, Ed. Com., Offcrton Bui. 3, pp. 5-20; abs. in Dairp, 21 {1909), No. 2-'i8, 

 p. 217).- — This is a report of an experiment to discover the effect of feeding 

 brcAvers' grains upon the quantity and quality of milk and is a continuation of 

 earlier work (E. S. R., 18, p. 870). 



Two lots of 5 cows each were used in this experiment, which lasted 10 weeks. 

 The daily ration of lot 1 consisted of 4 lbs. of maize meal, 2 lbs. of Bombay cotton 

 cake, 3 lbs. of chopped straw, 12 lbs. of hay, 20 lbs. of brewers' grains, and 20 

 lbs. of swedes per 1,000 lbs. live weight. The average daily yield per head for 

 this lot was 11.435 qts. of milk, containing 3.34 per cent milk fat and 13.48 per 

 cent total solids. Lot 2, which received a similar ration excei)t that the brewers' 

 grains were replaced by 40 lbs. of swedes, gave an average daily yield jic-r head 

 of 11.505 qts. of milk, containing 3.37 per cent fat and 13.44 per cent total 

 solids. Lot 1 lost on an average 2.5 lbs. per head in body weight, whereas lot 2 

 made an average gain in body weight of 5.6 lbs. per head. 



At the end of the above experiment the rations of the 2 lots were reversed, 

 with the following results : The average daily yield of lot 1 for 10 weeks was 

 10.595 qts. milk, containing 3.49 per cent fat and 9.21 per cent solids-not-fat. 

 Lot 2 gave an average daily yield per head of 10.86 qts. milk, containing 3.45 

 per cent fat and 9.09 per cent solids-not-fat. Both lots lost in body weight, the 

 first lot losing 14 lbs. and the second lot 19.6 lbs. per head. 



Milk production, .7. M. Scott {Florida Hta. Bui. 99, pp. 3-10). — These experi- 

 ments have been noted from another source (E. S. R., 21, p. 375). 



Winter milk production, J. M. Adams and W. F. Prendergast {Dcpt. Agr. 

 and Tech. Instr. Ireland Jour., 9 {1909), No. //, pp. 665-69Ji, pis. //, dgms. //). — 

 This is the first report on studies undertaken to ascertain the cost of producing 

 milk in Ireland in winter, at which time so little butter is placed on the market 

 that the Irish trade in the British butter markets is practically lost. Ou one 

 farm the profit ou 5 winter-milking cows was £21 10s. 5d., aud on 5 summer- 



