660 REPORT OF THE COMMISSIONER OF AGRICULTURE. 



from the spleen of this animal were equally negative. A tube of gelatine into which 

 a bit of spleen tissue was dropped began to liquefy very slowly. It contained a ba- 

 cillus and a large oval coccus. 



No. 3, from the same herd, killed, had its lymphatic glands generally enlarged and 

 purplish , the spleen dotted witli numerous blood-red elevated points, lungs with large 

 carnificd areas. The mucous membrane of the large intestine was merely congested. 

 No bacteria seen in cover-glass preparations of the spleen, and a gelatine culture 

 made as before remained sterile. 



Several miles east of Champaign, 111., the disease was appearing in a herd, the 

 owner of which very kindly permitted us to make what examinations we thought 

 advisable. On July 8 two autopsies were made. In No. 4, dead since last night, 

 the lymphatic glands generally were enlarged and purpHsh. The subcutaneous fatty 

 tissue stained yellow. The peritoneal and pericardial cavity contained a considera- 

 ble amount of yellow serum. The only other marked lesion observed was an enor- 

 mous enlargement of the spleen, which was very dark and pulpy. The mucous 

 membrane of the alimentary canal apparently intact. These lesions did not point 

 to hog-cholera. Cover-glass preparations of the spleen were negative. A piece 

 dropped into a tube of gelatine slowly liquefied the latter. A bacillus was found in 

 it, not pathogenic. 



A pig (No. 5) which was observed to be very weak, although able to move about 

 when disturbed, was killed for further information. In the subcutaneous tissue over 

 the abdomen were numerous ecchymoses. The inguinal glands were greatly en- 

 larged, cortex purplish, some lobules deeply congested throughout. The abdominal 

 cavity contained a small quantity of colorless serum; the spleen considerably tume- 

 fied and covered with blood-red i-aised points. The lymphatic glands about the 

 stomach, as well as the bronchials, were deeply congested, tiie cortex infiltrated with 

 blood. The epicardium was dotted over its entire surface with minute extravasa- 

 tions. The mucous membrane in the fundus of the stomac}i and of the entire length 

 of the large intestine covered with closely-set extravasations. Cover-glass prepara- 

 tions, as well as cultures of the spleen, were entirely negative. 



Reports of swine-plagvie from Geneseo, Henry County, made it advisable to make 

 a few post mortem examinations m this section of the State, in order to make sure 

 of the nature of the disease. The losses were very heavy, involving in many places 

 the gi-eater part of the affected herd. July 11 several autopsies were made in a herd 

 about 3 miles from Geneseo. In this herd the disease had been observed about nine 

 days before. At the time tliree or four large animals had died during the night and 

 a number of others were ill. 



No. 6. — Adult black male, in good condition, no signs of decomposition. In the 

 peritoneal cavity there were ecchymoses beneath the peritoneum of the dorsal wall, 

 near the caudal end of the kidneys, at least an inch in diameter. The spleen was 

 enlarged and congested. Whitish patches showing through the serosa of the large 

 intestine were afterwards found to correspond with ulcerations of the mucous 

 membrane. The lymphatic glands in general with congested cortex. The left lung 

 completely solidified, blackish, and everywhere adherent to cliest wall. On forc- 

 ing the ribs apart the lung tissue broke as a watermelon would ; from the broken 

 surface a blackish frothy liquid exuded. A portion of the right lung was in the 

 same condition. A fibrinous deposit on the epicarduxm indicative of pericarditis. 

 In the alimentary tract the mucous membrane of the fundus of the stomach is 

 darkened with extravasations on the ridges of the folds. In the large intestine the 

 mucous membrane is completely covered with punctiform extravasations, in part 

 converted into pigment. In the cascum and colon are isolated disk-shaped ulcers 

 about one-half inch in diameter, slightly elevated. The center is dark, surrounded 

 by a broad yellowish margin, giving the whole a button-like appearance. On sec- 

 tion a whitish tough tissue is found to make up the ulcer and extend to the peri- 

 toneum, where it appears as a whitish patch when viewed from tlie serous surface. 

 Cover-glass preparations of the spleen negative. Two portions drojiped into a tube 

 of gelatine and agar-agar respectively gave rise to cultures which will be described 

 n detail farther on. 



No. 7. — A small shoat, having shown signs of disease for a few days, was killed by 

 a blow on the head. The superficial inguinal glands were enlarged and reddened. 

 Both kidneys dotted on the surface with minute petechit-e. On section a few are 

 found in medullary portion. The spleen is dotted with a few blood-red elevated 

 points. Cover-glass preparations of the spleen negative. Cultures remain sterile. 



No. 8. — Large black sow; died last night. Adipose abundant. In this animal the 

 spleen was enlarged, the medullary portion of kidneys deeply reddened, lungs nor- 

 mal. The mucosa of the large intestine ^^'as entirely covered with minute elongated 

 spots of pigment, representing former extravasations. Cover-glass preparations of 

 spleen also negative. A gelatine tube containing a portion of spleen contained a 



