1889.] PUBLIC DOCUMENT — No. 4. 407 



ground, until, in the spring of 1887, all the cattle on the farm, 

 with a few exceptions, had been killed or otherwise disposed 

 of, and the barn was then fumigated. Not suspecting that 

 this trouble was infectious, new^animals were added to the 

 herd after killing the bull, in 1885, and in one instance a bull 

 was bought in November, 1886, and in June, 1887, he was 

 killed, and the post-mortem showed the lesions of the disease. 

 This bull came from a farm where tuberculosis had never 

 been known to exist. Thinking that the disinfection of the 

 barn had been such as to remove all traces of the disease, 

 Mr. Rogers, in May, 1888, purchased in Vermont six cows 

 that were healthy and from a farm where tuberculosis was not 

 known to exist, and put them in the barn from which he had 

 taken the diseased animals. In December, 1888, only two 

 of these animals remained in an apparently normal condition ; 

 the others, having developed the symptoms of tuberculosis, 

 had been taken away. The forty-four animals on the farm, 

 including the six from Vermont, have been killed or other- 

 wise disposed of. 



In December, 1884, five Guernsey cows were brought to 

 the farm of Mr. F. L. Ames in North Easton, and in August, 

 1885, a bull of the same breed. During the winter of 1887 

 this bull began to fail, and in April of that year he was ex- 

 amined by Dr. J. S. Saunders of Boston, and the diagnosis 

 of tuberculosis made, when he was killed, and the autopsy 

 showed the lesion of tuberculosis with phthisis. 



In May of the same year, after an examination of the herd- 

 (thirty-six animals) by Dr. A. Peters of Boston and myself, 

 ten mature animals and four calves were killed. ' Six of the 

 cows were Ayrshires, and the others Guernseys. The calves 

 were killed as they were sired by the bull killed in April, 

 and the others as they presented symptoms of tuberculosis, 

 which were sustained by the post-mortems. The following 

 December, four more, three Ayrshires and one Guernsey, 

 were disposed of by death for the same reason, making in all 

 up to date nineteen herds. 



Of the imported Guernseys, three cows and the bull were 

 killed, one cow died from the efiects of calving, and one re- 

 mains. Previous to bringing the Guernseys to the farm the 



