164 MAINE AGRICULTURAL EXPERIMENT STATION. 



July i, 1897, Melinda was killed. She was very much 

 reduced in flesh and weak. Had eaten but little for ten days 

 previously. Melinda calved May 11, 1897, an d was at that time 

 in good flesh and apparently perfectly well. Soon after calving 

 she commenced to fail. Developed a severe cough, had a 

 rough dull coat, her appetite was irregular and she began to 

 fail in her milk. About the 20th of May she went out to pasture 

 in good feed. Was put into the barn at night and fed grain. 

 Three weeks before she was killed we were able to discover 

 lung lesions by a physical examination. At the autopsy we 

 found in the abdominal cavity innumerable small tubercles over 

 the surface of the mesentary and diaphragm. In the walls of 

 the uterus were a considerable number of small abcesses one- 

 half inch in diameter. Scattered quite evenly through both 

 lungs were tubercles from the size of a pin head to one-half inch 

 in diameter and so thick that they seemed to fill nearly the 

 entire volume of the lungs. The parietal and visceral pleura in 

 the inferior anterior region, and on the right side the parietal 

 pleura were nearly covered with small tubercles. The medias- 

 tinal glands were tuberculous and much enlarged. One of 

 them was ten inches long and five inches in diameter. Except 

 in the walls of the uterus, there was no breaking down of the 

 tuberculous tissue but it was all apparently of recent growth. 



The other six animals of this herd were killed October 12 

 and 14, 1897, and the following conditions noticed: 



Agnes, 2d, had apparently always been well except that she 

 reacted to the tuberculin test. The only lesions found were in 

 two lymphatic glands and they showed very slight evidence of 

 disease. A guinea pig inoculated from one of these glands 

 killed after nine weeks showed no evidence of disease, so that 

 what evidence we have goes to show that this cow had recovered 

 from tuberculosis. 



Hallie. This cow had always seemed well except for an in- 

 creasing difficulty in breathingwhich had been noticeable for six 

 months before she was killed, and a cough which had been 

 troubling her for three months and constantly growing worse. 

 We found tuberculous lesion in the inguinal, mediastinal and 

 post pharyngeal lymphatics, and a few small tubercles scattered 

 through both lungs. One of the mediastinal glands measured 



