DAIRYING. 81 



The treatment of tuberculosis with sterile reium, S. Bkuxiikim {Ala. in Ctiilbl. 

 Baki. II. Par., 15 (IS'94), No. 17, pp. 654, 655). 



Treatment of the skim milk returned to creamery patrons during the preva- 

 lence of mouth-and-foot disease, P. Vieth {Molk. ZUj., 8 {1S94), No. 21, pp. 305, 

 306; and Milch ZUj., 23 {1894), No. 21, pp. 329, 55^).— Recoiiimeuds that it be heated 

 to 90° C. or in a high-pressure sterilizing apparatus to 100" C. to prevent infection. 



Texas fever, A. T. Neale {Delaware Sta. Bnl. 23, pp. 11). — A condensed reprint of 

 the proclamation of the Secretary of Agriculture regarding this disease, a record of 

 instances in which Texas fever has been introduced into the State by animals 

 brought from the infected district, a comparison between the laws of Delaware and 

 of Kansas relating to the responsibility of drovers for losses incurred by Texas fever, 

 and a statement that the Delaware law on this point requires amendment. 



Parasitism of domestic animals, R. R. Dinwiddie {Arkansas Sta. Ilpt. 1893, pp. 

 3-31).— k reprint of Bulletin 20 of the station (E. S. R., 4, p. 749). 



DAIRYING. 



Composition of milk in successive period,"3 of lactation, P. Col- 

 lier [Neic YorJc State Sta. Bpt. 7.s'.9;?, 2)p. 13S-lln). — The average yield 

 and composition of the milk of all the co^Y8 in tlie test of breeds in the 

 first, second, and a part of the third, periods of lactation, are tabulated. 



"During the first months of the second period of lactation the milk yield is very 

 considerably in excess of the yield for the same months of the first period, [but] 

 gradually this excess disappears, so that after the seventh month the average yield 

 of milk becomes much less even than it was during the latter months of the (irst 

 period. The same is true as to the amount of total solids, while the percentage of 

 total solids during the entire second period is a little more than during the first 

 period, but remains nearly constant during the entire period. 



"The percentage of fat in the milk of the second period is at first 4 or 5 per cent 

 less than during the first period, but during the fourth, fifth, and sixth months 

 equals the percentage for the same months of the first period, but again falls off in 

 the latter months of the second period. 



"The total amount of fat and of casein of the second period follows closely the 

 changes in milk yield. The percentage of casein, at the first about 95 jier cent of 

 what it was during the first parts of the first period, gradually increased until dur- 

 ing the ninth and tenth months it is 10 per cent above what it was at the same time 

 in the first period. 



"The sugar is 10 to 12 per cent greater during the early months of the second 

 period than during these early months of the first, but diminishes slowly during 

 lactation." 



Changes in the relative size of milk globules in successive 

 periods of lactation, and in the actual number of globules during 

 lactation, P. Collier [New York State Sta. Rpt. 1S'JL\ pp. 153-Hi2). — 

 Observations are given on the size of the globules in the milk of dif- 

 ferent breeds in the first, second, and a part of the third periods. 



"There is, as a general rule, a steady iucrease in the number of the smaller globules 

 and a decrease in the larger globules duringsuccessive periods of lactation. . . . The 

 smaller globules below 1 on the micrometer scale have increased 68 per cent in the 

 second period over what they were in the first; the largest globules (from 4 to 6 

 upon the scale) have decreased during the second period 67 per cent of their num- 

 ber during the first period; while the intermediate globules during the second 

 1976— No. 1 6 



