DAIRY FAEMING DAIRYING. 179 



A test was made of the effect of filling only the suction filter cup with cotton 

 and contrasting this with the results where the cotton was not used. With the 

 cotton the count was 4,405; without the cotton, 16,185. These results indi- 

 cate that where the dairyman does not feel that there is sufficient time to fill 

 all the filter cups with cotton the maximum benefit will be obtained by filling 

 the suction filter. 



A comparison was made of the relative filtering efficiency of absorbent and 

 ordinary cotton, but there was no observable difference. Carrying the pail to 

 the barn with the top removed increased the bacterial count, as was to be ex- 

 pected. Also, disconnecting the parts to rearrange the teat cups when changing 

 from one cow to another only occasionally increased the germ content to a 

 marked extent. 



Milking' machines and clean milk, F, H. Hall (Neic York State Sta. Bui. 

 317, popular ed., pp. 10). — A popular edition of the above. 



The production and handling of clean milk, K. Winslow (iVew York, 1909, 

 2. ed., pp. 367, i)ls. 18, figs. So). — In this edition much of the original text 

 (E. S. R., 19, p. 779) has been revised. The following new chapters have been 

 added: Essentials of Milk Bacteriology, Quantitative Bacterial Analysis of 

 Milk, Media Making and Apparatus Keciuired for Bacterial Analysis of Milk, 

 and Classification and Identification of Bacteria, by II. W. Hill, and Laboratory 

 Work in Dairy Bacteriology, by II. W. Conn. 



The score card in dairy reg'ulation, G. H. Glo\'eb (Hoard's Dairyman, JfO 

 (1909), No. Jfl, pp. 1197, 1209).— It is pointed out that the score card for 

 dairy work should be adapted to suit local conditions as the different items 

 do not have the same relative significance in all places. " Ten points allowed 

 for cleanliness of cows is just as important in Colorado as it is in Chicago, 

 but 22 points allowed on stables is not, for the reason that dairy cows in 

 Colorado are only kept in stables while they are being milked for one-quarter 

 of the year. Again, the cooling of milk is just as important in Colorado as 

 in Chicago, but the tuberculin testing of cows has not the same importance 

 because there is much less of tuberculosis among cattle in the arid West." 



The author has devised a score card in which he reserves 20 points out of 

 equipment for general conditions in order to have a greater freedom in allow- 

 ing for local conditions. 



Disinfection of a larg'e dairy premises and many employees after scarlet 

 fever, C. E. North (Enghi. News, 62 (1909), No. Jf, p. i 06'). —Details are given 

 of the method of disinfecting the employees and premises of a large dairy 

 after 2 cases of scarlet fever had been discovered among the employees. 



The milk was pasteurized each day in order to give consumers absolute safety 

 from infection without interrupting the operation of the plant. The dairy 

 house, dairy utensils, and dormitories for the employees were disinfected, 

 and the dormitory disinfection was tested by control cultures of bacteria. 

 The employees were disinfected, provided with sterilized clothing, and their 

 throats and noses examined daily by the visiting physician. At the end of 

 15 days, no other cases having been discovered, the pasteurization of the 

 milk was discontinued. 



Directions for the home pasteurization of milk, L. A. Rogers (U. S. Dept. 

 Agr., Bur. Anim. Indus. Circ. 152, pp. 2).— This circular describes a simple 

 outfit for the home pasteurization of the milk delivered in the cities in the 

 summer mouths which is to be used chiefly for children. 



Leucocytes in milk: Methods of determination and the effect of heat upon 

 their number, H. C. Campbell ( U. S. Dept. Agr., Bur. Anim. Indus. Bui. 117, 

 pp. 19). — The experimental work reported was conducted in cooperation with 

 the Pennsylvania state live-stock sanitary board. 



