176 EXPEEIMENT STATION RECOKD. 



mined in each case according to the nature of the distributions dealt with, 

 \%tiereas some have applied all methods to all cases indiscriminately. 



Supplementary tables for finding the correlation coefficient from tetra- 

 choric groupings, P. F. Eveeitt {Biometrika, 8 (1912), No. 3-4, pp. 385- 

 395). — These tables were prepared to facilitate the determination of a corre- 

 lation coefficient by the method of the fourfold table in those cases where cor- 

 relation has a very high value. 



DAIRY FARMING— DAIRYING. 



Dairying, K. Storen (Meierilcere, Christiariia [1911], pp. 282, figs. 118; 

 rev. in N. Y. Produce Rev. and Amer. Cream., 32 {1911), No. 13, p. 482). — A 

 general treatise on dairying. 



New queen of the dairy world, O. Erf (Hoard's Dairyman, 43 (1912), No. 

 14, p. 543, figs. 3). — An account of methods of feeding and other data con- 

 cerning the Holstein cow, Banostine Belle De Kol, which is reported to have 

 produced 27,404.4 lbs. of milk in 1 year. 



Milking with machines, F. Schneiter (Wiener Landw. Ztg., 62 (1912), No. 

 27, pp. 339, 340, fig. 1). — A brief description of different types of milking ma- 

 chines, with a discussion of their practicability for the dairy farmer. 



A short method of computing dairy rations according to the net energy 

 standards, H. E. Van Norman (Pennsylvania Sta. Bui. II4, PP- 3-20). — This 

 bulletin presents a short method of computing dairy rations according to the 

 net energy standards. The ordinary methods of computing balanced rations 

 take into consideration their composition only, while with the energy standard 

 the rations are computed according to their ability to do work as measured by 

 energy after deducting the losses in feces, gas, urine, and energy of digestion. 

 This leaves the net energy available for maintenance and milk production. 



Samples of rations, a convenience table for compounding grain mixtures, and 

 a table of energy values of the more common feeding stuffs are given. 



On the specific effect of feeding stuffs upon milk production, A. ]Moegen 

 (Landic. Vers. Stat., 77 (1912), No. 1-2. pp. 17-31).— \ brief report on an ex- 

 periment with 3 sheep and 2 goats, with a review of previous work. All of 

 these indicate that certain feeding stuffs exert a specific effect upon the yield 

 of milk and the character of the milk fat. 



The influence of organic and inorganic phosphorus compounds on milk 

 secretion, G. Fingerling (Biochem. Ztuchr., 39 (1912), No. 3-4, pp. 239- 

 269). — Rations containing straw, blood albumin, molasses, peanut oil, starch, 

 salt, and carbonate of lime were used in these experiments with 2 goats. 



Neither organic nor inorganic phosphorus in the form of lecithin, phytin. 

 casein, nuclein, nucleic acid, and disodium phosphates were found to have any 

 specific effect upon the activity of the mammary glands as regards the amount 

 of milk, percentage of milk constituents, or absolute percentage of lime or 

 phosphorus content of the ash. The organic phosphorus produced no better 

 results than the inorganic phosphorus, so that apparently animals can obtain 

 their supply of phosphorus through inorganic as well as organic compounds. 



Hypoplasia mammaria and the chemical composition of milk, U. Selan 

 (R. Lab. Chim. Agr. Udine, Ric. Sper. e Attiv. Hpicgata, 3 (1909-10), pp. 33- 

 38). — No appreciable difference was found in the chemical composition of milk 

 in the diseased and normal quarters of 2 cows affected with congenital hypo- 

 plasia mammaria. 



The effect of the presence of Bacillus bulgaricus and of Bacterium lactis 

 acidi upon typhoid bacillus in milk, Lena R. Potteb (Rpt. Bd. Health Cown., 

 J909-10, pp. 150-154)- — Samples of sterile milk were inoculated with bouillon 



