186 



EXPERIMENT STATION. 



[Jan. 



Record of No. 1 {Red Grade). 



November 16, weight COO pounds; Moveniber 23, weight 597 pounds. 



December 23, 9.30 a.m., autopsy. Principal lesions : lungs exten- 

 sively tuberculous; extensive fibrous inflammation of serous coat of first 

 stomach ; small intestines engorged with dark blood but free from evi- 

 dences of inflammation, such as inflltration, or presence of bloody 

 exudate on mucous surfaces; liver enlarged and filled with dark blood. 

 The muscular tissue under .skin showed numerous ecehymoses. 



When first brought to the veterinary hospital, although in fair flesh, 

 the animal showed fairly well-defined physical symptoms of pulmonary 

 tubereulo.sis; with the development of the disease there was a gradual 

 loss of weight. The loss of appetite, violent purgation and paraplegia 

 were evidently due to poisoning with the arsenate of lead. 



A chemical analysis of small samples of milk and urine taken on 

 November 26, after 15 grams of lead ai'senate had been administered, 

 failed to reveal the presence of either lead or arsenic. 



Record of No. 2 {Jersey). 

 November 16, weight .^40 pounds ; November 23, weight 545 poiinds. 



December 23, owing to emaciation and paralysis, animal was killed, 

 and autopsy held. Principal lesions: lungs badly tuberculous; mucous 



