892 EXPERIMENT STATION RECORD. 



irregular fiactual ions in the fat content, continuing in one case to the ninth milking. 

 The total yield of milk was much reduced. 



Herd records, G. M. Gowell (Maine Sta. Rpt. 1897, pp. 192-200).— -This is a 

 monthly record of 14 cows for 1897. The tabulated data include the yield of milk 

 and butter, the kind and quantity of food, and a statement of cost of food per 

 pound of milk and butter produced for each cow. 



Effect of age of the cow on the yield and quality of milk ( .!/i7c7< Ztg., 27 (1S9S), 

 Xo. 53, p. 841). — The milking trials made in Algau since 1894 are said to indicate in 

 genera] that the yield of milk and fat increases up to and including the fifth calving. 

 after which it gradually decreases, although there are exceptions in the case of 

 individual cows. The milk is richest in fat after the third and fourth calvings. 



The dairy markets of Pennsylvania, II. IIaywahd (Pennsylvania Dept. Agr. Rpt. 

 1897, pp. 59S-617). — This treats in a popular manner of the production and marketing 

 of milk, butter, and cheese in Pennsylvania. The author discusses boards of trade 

 in their relation to dairying, and quotes the constitution and by-laws of the Elgin 

 board of trade. 



Dairying (Pennsylvania Dept. Agr. Rpt. 1S97, pp. 247-282). — This contains 11 papers 

 read at farmers' institutes in Pennsylvania during 1896-97, treating in a popular 

 manner of various subjects connected with dairying. 



Milk testing on a large scale by the Nahm method (Milch Ztg., 28 (1S89), Xo. 1, 

 pp. 5, 6, Jigs. 3). — Slight modifications of the apparatus used in this method (E. S. R., 

 6, p. 47-1), with an arrangement for making a number of tests at the same time. 



Dairy and milk inspection, C. A. Carey (Alabama College Sta. Bui. 97, )>)>. 

 211-258). — This is a popular bulletin treating of the testing of dairy herds for tuber- 

 culosis, the feeding and care of cows, the composition and analysis of milk, milk 

 adulteration, bacteria and yeasts in milk, including pathogenic germs, pasteuriza- 

 tion, disinfection of barns and dairy houses, the milk ordinance of Montgomery, 

 Alabama, and a bibliography of works consulted in the preparation of the bulletin. 



Testing dairy products by the Babcock test, J. M. Bartlett (Maine Sta. Rpt. 

 1897, pp. 61-90, figs. S). — This is largely a compilation treating of the subject in a 

 popular manner. The apparatus required is figured and described, and detailed 

 directions are given for sampling and testing milk, skim milk, buttermilk, whey, 

 cream, butter, cheese, and condensed milk, special attention being given to sampling, 

 weighing, and testing cream. A balance speciality designed for weighing cream 

 samples is described. The use of the lactometer and fat test in the detection of 

 adulterated milk is discussed. 



Tilsiter cheese and its manufacture, R. Eichloff (Milch Ztg., 2S (1899), Xo. 4, 

 pp. 52,53). — Describes the method employed in factories in "West Prussia. 



Cheese poison, 11. C. Kedzie (Amer. CheesemakiT, 13 (1899), Xo. 156, p)>. 2, 3). — A 

 popular explanation of the changes in milk and dairy products in general. 



VETERINARY SCIENCE AND PRACTICE. 



Report of the State veterinarian, L. Pearson (Pennsylvania Dept. 

 Ayr. Bttl. 34, pp. 119-150). — The report includes detailed statements of 

 the work of the department during - the year. 



"The number of cattle tested up to June 1, 1897, was 9,108; the number of these 

 that were found to be tuberculous and condemned was 1,839. The percentage of 

 tuberculosis, therefore, was 20.39. Since June 1, 4,887 cattle have been tested with 

 tuberculin, and of these 671 were found to be tuberculous and killed, equivalent to 

 13.73 per cent. Considering the manner in which the herds to be tested are selected 

 and the wide distribution of the work, covering practically all parts of the State, it 

 would -ceni fair to assume from this showing that many of the most thoroughly 

 infested herds have been discovered and disposed of, and that the percentage of 



