132 REPORT OF THE BUREAU OF ANIMAL INDUSTRY. 



caudal tip, to a dark-red croupous condition towards the center of the lobe. The right 

 lung is free from pieuritis. On the diaphragmatic surface of principal lobe are from 

 six to seven patches from one-half to 1 square inch hi area of a bright red, mottled 

 regularly with grayish-yellow points. On section these hepatized regions are of a 

 grayish pink, mottled with deep red. The air tubes exude a soapy fluid on com- 

 pression. The ventral lobe and a portion of the principal lobe in the same condition. 

 Bronchial glands enlarged, firm, slightly reddened. In both bronchi a large num- 

 ber of lung worms, which are very probably the cause of much of the broncho- 

 pneumonia. No inoculations were made from it. 



Spleen slightly enlarged, congested. A small quantity of blood-colored serum in 

 the abdominal cavity and some fibrils. Kidneys with numerous hemorrhagic points 

 in medulla. Stomach and duodenum normal ; five ascarides lodged in common bile 

 duct. In ileum the walls are triple the normal thickness ; the mucosa is converted 

 superficially into a yellow, leather-like, creased surface ; when this necrosed mass 

 is forcibly scraped away a deep wine-colored tissue is exposed. In the colon the 

 deeply reddened membrane is studded with about twelve small ulcers to a square inch. 

 In the caecum the entire membrane is involved down to the muscular coat. 



No. 70, exposed since October 8, died this evening. Lungs normal. Lesions lim- 

 ited to digestive tract and as severe as those of No. 72, just described. 



October 23. No. 68, exposed since October 8, dead this morning. Spleen en- 

 larged. Lungs with petecchice on surface ; no broncho-pneumonia. Mucosa of large 

 intestine deeply congested and beset with very many small ulcers. 



October 24. No. 75, fed with diseased viscera October 13, and since then exposed 

 in infected pen, dead this morning. Spleen enlarged ; large intestine extensively 

 ulcerated. Lungs normal. 



October 26. No. 67, exposed since October 8, dead this morning. Ventral sur- 

 face of body reddened. Spleen enlarged and dark, friable. Lymphatics in general 

 enlarged, indurated, pale. Mucosa of great curvature of stomach intensely inflamed. 

 About seventy ulcers present, partly hemorrhagic. Small superficial ulcers through- 

 out small intestine, with lemon-yellow slough. The entire large intestine contains 

 them, including rectum, about one-eighth to one-half inch across. Slough of a 

 dirty-yellowish color. Lungs normal. 



October 27. No. 468, pig about one year old, exposed since October 1, found dead 

 this morning without any marked signs of previous illness. Spleen enlarged, with 

 numerous hemorrhagic infarcts. Considerable blood-stained serum in abdominal 

 cavity. Lymphatics generally with cortex or entire substance hemorrhagic. A 

 few hemorrhagic spots in stomach. The serosa highly inflamed; several small 

 ulcers near valve. Mucosa of large intestine dotted with petecchise and discolored 

 with diffuse extravasation. Kidney with cortex and medulla pervaded with punc- 

 tiform hemorrhages. Several ulcers with neoplastic base in caecum. Right lung 

 lightly glued to chest wall. Considerable hemorrhage in this pleural sac. Over the 

 major portion of the pleura of the right lung, after removal, a closely adherent, 

 thin, opaque, false membrane. The tip of ventral and cephalic lobe collapsed. The 

 ple'ira of the cephalic (anterior) half of left lung covered by a delicate net-work of ex- 

 udate. Collapse as in right lung. In general the various lobes are glued together. 

 The lung tissue itself is pervaded with small hemorrhages, and oedematous. No 

 hepatization. Bronchial glands hemorrhagic. From the spleen several cultures 

 (agar and liquid) contain only hog cholera bacilli. These are visible in large num- 

 bers on coyer-glass preparations of spleen pulp. Gelatine roll cultures show the 

 same organisms. 



November 2. No. 66, exposed since October 18, dead this morning. Post mortem 

 decomposition advanced. Peritonitis. Extensive ulceration of lower ileum and 

 large intestine. Ventral lobes of lungs airless. Lung tissue with hemorrhagic 

 points. 



November 3. No. 81, exposed October 22, dead this morning. Large intestine 

 with mucosa highly inflamed and slightly ulcerated. Lungs normal. 



November 4. No. 80, exposed since October 22, dead this morning. Intense con- 

 gestion of mucosa of large intestine, also numerous ulcers. The mucosa of ileum 

 for 3 feet from valve completely necrosed. Lungs normal. 



December 7. No. 94, exposed since November 28, dead this morning. Ulceration 

 beginning in the large intestine. Lungs with a few hemorrhagic foci; otherwise 

 normal. 



December 8. No. 54, exposed since November 13, dead this morning. Several old 

 ulcers in large intestine. Lungs normal. 



In this connection the following case is of great interest, not only 

 in showing the extent to which swine plague may go in the destruc- 

 tion of lung tissue, but also in showing that animals may live for 



