THE LUNG PLAGUE. 



43 



six bullocks and one cow. Incisions were made to relieve the parts, emollients applied, 

 and purgatives administered. 



On the 26th of May seven out of the nine bullocks and one cow presented consider 

 able tumefaction at the root of the tail ; incisions and emollients were resorted to. On 

 the 31st of May the swelling of the parts inoculated disappeared, and the animals regained 

 their appetite and vivacity. 



Two of the nine bullocks by this time suffered much ; the root of the tail, the tissues 

 around the anus, and the nates, were consolidated and enlarged by a deposit. In spite of 

 all efforts, the free excision of the material so as to produce an artificial anus, the obstacle 

 to defecation was so great, the straining so violent and constant, and the vital powers sunk 

 so low, that on the 8th of June they died. Dr. Willems observed that in incising these 

 tumors the animals suffered no pain. 



On the 9th of June these animals were dissected. One presented a generally healthy 

 condition of the internal organs. The lesions were localized in the anal region. The muscles 

 and other tissues around were of a pale red color, interspersed with degenerated tissue. 

 There was no suppuration. The anus and its surroundings for at least twelve inches in di 

 ameter appeared gangrenous. The lungs were of dark color, slightly congested, and pre 

 senting but the slightest trace of marbled hepatization. The gall bladder was found full of 

 black dense bile. There was slight serous effusion in the peritoneum, and the mucous lin 

 ing of the intestines presented red or brown punctiform discolorations and some patches 

 of red injection. 



In the second bullock the lesions were more extensive. The mortification of tissues 

 extended up the rectum a distance of six inches. The peritoneum was inflamed, in some 

 parts adherent by its opposing surfaces, and a reddish serosity was effused in its cavity. 

 The liver was softened, degenerated, of a light yellowish color. The mucous membrane 

 of the tongue and windpipe was of a dark brown color. The lungs were black, flaccid, 

 and in the pleural sacks was a citrine-colored serous exudation. In the general disorgan 

 ization of the organs of this animal the most interesting feature was a number of cysts, 

 with delicate walls, distended by a dried homogeneous material similar to that inclosed in 

 the intestinal tubercles of animals that die of pleuropneumonia. Some of these little sac- 

 cules were in the folds of the peritoneum, but the majority, at least sixty, were in the 

 thorax and on the internal surface of the ribs. 



FOUETH GROUP OF OBSERVATIONS. 



Alarmed by the foregoing results, Dr. Willems determined on attempting inoculation 

 at the tip of the tail, as follows : 



Date. 



Material used. 



Animals inoculated. 



Seat of inoculation. 



June 19, 1851.. 



Pulmonary exudation from an animal in 



the first stage of disease. 

 Pulmonary exudation from an animal in 



the first stage of disease. 

 Pulmonary exudation from an animal in 



the first stage of disease. 

 Pulmonary exudation from an animal in 



the first stage of disease. 



Five lean Belgian bullocks . 



One Dutch bullock 



One calf two months old. .. 

 One calf three months old.. 



Tip of tail. 

 Tip of tail. 

 Tip of tail. 

 Tip of tail. 



