374 EXPERIMENT STATION RECORD. 



Milk Production. I, Herd improveinent. II, Feeding, H. A. Hopper 

 {Iiidiiina t<ta. Vires. 11, pp. S, figs, 'i ; 13, pp. 21, Jigs. 3). — Circular 11 presents 

 Itopular suggestions with reference to means of improving the dairy herd. 

 Circular 13 is a discussion of facts and principles thus far found useful in 

 profitable milk production. 



Cows V. cows, W. .1. Fraskk {Illinois tSta. Virc. 118, pp. 3-2G, flgs. Ui). — ^An 

 address given at various dairy meetings. The author thinks that profits on an 

 average dairy farm to-day can easily be doubled by keeping better cows. This 

 can be done by selling off the poorest cows and raising heifers from the best 

 stock instead of l)uying stock of doubtful ancestry. 



Improving' dairy conditions, J. AI. Trueman {Connecticut Storrs Sta. Bui. 

 53, pp. 139-16It, figs. 20). — This is written for the milk producer, and discusses 

 the characteristics of good dairy stock, how to feed and care for it, the sanita- 

 tion and ventilation of dairy buildings, and the best methods of handling milk. 

 There are tables showing the cost of feeding heifers at the college and the cost 

 of milk produced by cows in the college herd under 5 years of age. 



Beconstruction of dairy barns {But. [J/«/«c] Dept. Agr., 7 {1908), No. 2, 

 pp. .'il-63, figs. 13). — The principal features of this publication are a discussion 

 of the King system of ventilation, and hints for reconstructing the tie-up, light 

 in dairy barns and features in all dairy barns that should receive special atten- 

 tion, such as stalls, mangers, floors, gutters, storage of feed, etc. 



Amyl alcohol in testing [cream,] C. H. Eckles and H. S. Wayman {Chi- 

 cago Dairy Produce, 15 {1908), No. 7, p. 20.) — A small quantity of amyl alcohol 

 colored bright red by the addition of an auilin color is droi)ped on the top of the 

 column of butter fat iu the test flask. Being lighter than the fat, it floats 

 above it and thus removes the meniscus from the fat and leaves a straight line 

 across the top of the column, thereby allowing more accurate reading of the fat 

 than when measurement is made to the bottom of the meniscus. The readings 

 thus made compare very closely with the results of the gravimetric determina- 

 tion of fat. 



The Babcock test, W. B. Liverance {Michigan Sta. Circ. 2, pp. 7-16, figs. 

 6). — Directions are given for using the Babcock test to determine the percentage 

 of fat in whole milk, skim milk, buttermilk, cream, cheese, and whey. 



The cost of testing pure-bred cows, J. B. Lindsey {Massachusetts Sta. Circ. 

 15, pp. 2). — This is a supplement to Circular 9 (E. S. R., 19, p. ST9), and con- 

 tains a schedule of prices adopted by the Massachusetts Station for making 

 tests for dairymen. 



Standard for Babcock glassware, E. B. Holland {Massachusetts Sta. Rpt. 

 1907, pp. 113-119).— A State law which took effect July 1, 1901, requires that 

 Babcock glassware should be tested for accuracy. Up to December 1, 1907, 

 18,85.5 pieces of glassware had been tested, of which 1,770 pieces, or 9.39 per 

 cent, were condemned. It is found that manufacturers of glassware do not use 

 the same standard of graduation, and upon the request of the station a tentative 

 standard of graduation has been proposed by the U. S. Bureau of Standards, 

 which recommends that a true cubic centimeter at 20° C, equivalent to 0.998877 

 gm. of water at 4° C, be used for the graduation of all Babcock glassware. 

 Suggestions are also made as to methods of testing and the limit of error. 



Supervision of the milk supply {Rpt. Bd. Health Montclair, N. J., 13 {1907), 

 pp. .'/2--}7). — Some details regarding the methods and results of controlling the 

 milk supply in Montclair, N. J., are given. According to the account presented 

 considerable improvement has been made in the quality of the milk delivered 

 in the city. 



Fourth International Dairy Congress, 1909 {Indus. Lait. [Parish, 33 

 {1908), No. 24, pp. 457-460). — This gives the rules and programme adopted by 



