DAIRY FARMING — ^DAIRYING. 581 



Normal milk produced an average of 2.58 lbs. more of higher moisture content 

 and better quality cheese than similar milk (but with slightly higher per- 

 centages of fat and casein), overripe. The yield of cheese was 0.733 lb. per 

 1,000 lbs. milk more when the curds were dipped with an acidity of 0.17 per 

 cent than with the lots dipped at 0.2 per cent acidity. The quality of cheese 

 was practically the same in both instances. 



The effect of acidity at the time of adding the rennet (setting) was tested 

 in a series of experiments. While the results were not so pronounced as 

 expected, it was found that the loss of fat in the whey was slightly less, the 

 yield of cheese greater by a little over 1 lb. per 1,000 lbs. milk, and the quality 

 of cheese slightly better in the normal lots than in the high-acid lots. 



There was practically no difference noted in the use of 2 brands of rennet 

 extract having an acidity of 0.8 per cent and 1.22 per cent, respectively. 



The dairy herd, (J. E. Dav (Ann. Rpt. Ontario Agr. Col. and Erpi. Farm, 36 

 (.1910), pp. 133, 13.'i). — The record of the dairy herd for the past year is given. 

 The averages for the herd of 31 cows are: Number of days milking, 27G; pounds 

 milk, 7,411 ; pounds fat, 274.G5 ; cost of feed, $42.47 ; and profit, $26.19. 



The Canadian record of performance for pure-bred dairy cattle, J. G. 

 Rutherford (Canada Dcpt. Agr., Branch Live Stock Comr. Rpt. 2, 1910, pp. 

 49). — This contains the regulations, the standards for registration of the dif- 

 ferent breeds, and forms and records of cows qualified for registration. 



Milk and butter tests at the Liverpool show, 1910, E. Mathews (Jour. 

 Roy. Agr. Soc. England, 71 (1910), pp. 213-223).— This contains data on the 

 yields of milk and butter of different breeds, and reports an experiment in col- 

 oring milk to illustrate the value of the tintometer in detecting the addition of 

 coloring matter. 



The dairy industry in the Netherlands, J. J. L. Van Ryn (Dairy. 23 (1911), 

 No. 270, pp. 15.'i, 155). — An al)stract of a lecture before the British Dairymen's 

 Association at The Hague, May, 1911. It gives a general and statistical ac- 

 count of the dairy industry of Holland, with special reference to the assistance 

 rendered by the government and cooperative creameries. 



The influence of feeds on milk production, A. Zaitschek (Monatsh. Landio., 

 Jf (1911), No. 6, pp. 169-178). — A popular account of work previously noted 

 (E. S. R.. 25, p. 479). 



Experiments in feeding- diastasolin to calves, W. Mitller and G. voN 

 Wendt (Fiihling's Landw. Ztg., 60 (1911), No. 2, pp. ///-// 6). —Data are re- 

 ported on feeding diastasolin. The average cost per kilogram of gain with 15 

 calves was 1.404 marks (about 15.2 cts. per pound). 



Proceedings of the American Association of Medical Milk Commissions 

 (Proc. Amer. Assoc. Med. Milk Com., 1^ (1910), pp. 266, pi. 1). — This contains 

 an article on the history, development, and statistics of milk charities in the 

 United States, by J. W. Kerr, and other papers on dairy bacteriology and the 

 production of sanitary milk by various authors. 



"Why do cream tests vary? Factors affecting richness of cream. — Relation 

 of butter fat to butter, O. F. Hunziker (Indiana Sta. Bui. 150, pp. 27-55, figs. 

 15). — A series of experiments undertaken in order to demonstrate to the dairy 

 farmer and creamery patron the effect of the different factors which cause 

 variation in cream tests is reported. 



In testing the effect of the richness of milk on the richness of cream, it was 

 found that " all other conditions being the same 3 per cent milk produces 20 

 per cent cream, 4.5 per cent milk produces 30 per cent cream, and 6 per cent 

 milk produces 40 per cent cream." Three series of experiments were carried 

 out to illustrate the results of the rate of inflow, by which it was shown that 



