92 EXPERIMENT STATION RECORD. 



of luilk for the several inilkiugn reijrefiented in tlie test. The average fat content of 

 10 comjiosite samples, each representing 21 niilkiugs during 7 days, taken in this way 

 was 3.245 per cent, while the calculated average j^er cent was 3.27. 



Officials, associations, and educational institutions connected -with the 

 dairy interests of the United States for the year 1900 ( ('. .s. Dept. Agr., 

 Buremi- of Anhnul Iii<hjstrii ' V;v. 29, jip. 9). — A list of eacli. 



VETERINARY SCIENCE AND PRACTICE. 



Report of the cattle quarantines in Canada from November 1, 

 1897, to October 31, 1898, D. McEachran {Ottawa: 1899, 2>P- 

 56). — A report is uiven on the exportation and importation of animals 

 and upon the di.sea.ses which were studied during the time covered by 

 the report. These studies included work on tuberculosis, sporadic 

 aphtha, a disease affecting the mouths and feet of cattle, resembling 

 foot-and-mouth disease, Texas itch, hog cholera, swine plague, anthrax, 

 glanders, actinomycosis, sheep seal), and enzootic ophthalmia in cattle 

 and sheep. 



The greater portion of the report is occupied with the report by 

 J. G. Adami and C F. Martin upon the cattle at the Experimental 

 Farm at Outremont. Quebec, including studies upon the tuberculin 

 test, the detection of tubercle bacilli in milk of suspected animals, the 

 inoculation of guinea pigs and rabbits with milk from these animals, 

 feeding calves with the milk of suspected animals, and a ^>o.y?'-;y;6'/'^t;;y/ 

 examination of the cows. The results of these studies ma}' be stated 

 as follows: The 10 cows which reacted to the tuberculin test presented 

 good evidences of tubercidosis upon jMist-nu^rtem examination. The 

 disease was not generalized in any of the cows, and there were only -i 

 cases of pulmonary lesions. Nine of the cows gave distinct evidence 

 of the infection of the peri-tracheal lymph glands. In no case was 

 there any infection of the mammaiy glands, although in one cow the 

 supramammarv lymph glands contained tubercles. It is possible that 

 re^Deated large doses of tuberculin exercise a slight ciu'ative effect. 

 Although the cows were free from tuberculosis of the udder the milk 

 of several contained tubercle bacilli at times. Out of -i-i guinea pigs 

 and 42 rabbits inoculated with such milk only 2 guinea pigs and 1 uab- 

 bit died of generalized tuberculosis. Young calves fed entirely upon 

 the milk of these infected cows for a period of several months remained 

 wholly free from the disease, did not react to tuberculin, and showed 

 no trace of tuberculosis upon po^t-aio/'tcm. 



During the experimental period, the number of tubercle bacilli 

 present in the milk increased greatly at times Avithout any obvious 

 cause. And it is therefore evident that the milk of such cows although 

 usually not infectious may become so at any tune. 



Effect of different influences on normal temperatures of cattle 

 and relation of same to tuberculin test, II. L. Hussell and V. H. 



