76 REPORT OF THE BUREAU OF ANIMAL INDUSTRY. 



rhosed. Mucosa of caecum pale, of colon considerably congested. A 

 few small ulcers with hemorrhagic border. Mucosa in fundus of 

 stomach deeply congested. Slight hemorrhage in principal lobe of 

 each lung, otherwise both normal. Bronchial glands hemorrhagic. 

 Hog cholera bacteria quite abundant in spleen, as shown by cover- 

 glass preparations and cultures. 



December 15. No. 44, medium-sized white female, died yesterday 

 morning. Slight reddening of skin along median line of abdomen, 

 limbs, and throat. Spleen enlarged and engorged. Inguinal, bron- 

 chial, retro-peritoneal, and meso-colic glands with cortex hemorrhagic. 

 Liver badly cirrhosed. In caecum one ulcer an inch across, involv- 

 ing entire thickness of wall, and a few smaller ones. A few in upper 

 colon. Lungs oedematous. At least one-half of each lung (most 

 dependent portion) airless, of a red flesh color. Sprinkled through 

 it in some places more densely than in others are grayish-yellow 

 areas one-half to two millimeters in diameter. Trachea full of foam. 

 Bronchi contain a thick mucous secretion, most abundant in the dis- 

 eased region. A roll culture from the spleen contains numerous 

 colonies of hog cholera bacteria. From a bit of lung tissue a rabbit 

 was inoculated; a plate culture from the same shows a very large 

 number of colonies, probably hog cholera. The rabbit died on the 

 seventh day. Spleen enlarged. Coagulation necrosis in liver, which 

 also contains coccidia. Hog cholera bacteria numerous in spleen, as 

 shown by cover-glass preparations and roll cultures. 



No. 45, large black and white female, died December 13. Slight 

 reddening of skin. Spleen large, congested. Lymphatics in general 

 with cortex hemorrhagic. Liver badly cirrhosed; surface dotted 

 with hemorrhagic points. Kidneys on surface and on section, as 

 well as mucosa of caecum and upper colon, dotted with numerous 

 petecchise. No ulceration. Large quantity of blood-stained serum 

 and coagula in pleural sacs, chiefly in the right. Lungs not col- 

 lapsed, infiltrated with a reddish serum; lef t hypostatic. Abundant 

 mucous secretion in bronchi and smaller air tubes stained with 

 blood. No hepatization. Roll culture from a bit of spleen contains 

 a large number of colonies of hog cholera bacteria. The same may 

 be seen in cover-glass preparations from the spleen itself. 



No. 40. Large black and white male, died December 13. Spleen 

 enlarged and congested. Abdominal lymphatics with cortex more 

 or less congested. Liver slightly cirrhosed. One large ulcer on valve 

 about 1 inch across ; several half as large in the middle of colon. 

 Mucosa deeply congested in caecum and colon ; much pale serum in 

 pleural sacs. Jjimgs slightly oedematous. Of right lung the princi- 

 pal near root, ventral and tip of cephalic airless, collapsed. One 

 lobule on ventral (diaphragmatic) surface of principal lobe airless, 

 with faint catarrhal injection of bronchioles and alveoli ; of left lung 

 a small portion of the principal collapsed ; the ventral and cephalic 

 emphysematous. The trachea, bronchi, and branches contain a large 

 quantity of a translucent viscid mucus ; no lung worms present. 

 Bronchial glands enlarged, pale ; those on posterior aorta with cortex 

 hemorrhagic. Extravasations beneath epicardium. A plate culture 

 from a bit of lung tissue develops about seventy-five colonies of 

 hog cholera bacteria. A rabbit inoculated from the same bit remains 

 well. A roll culture from the pig's spleen contains about fifty col- 

 onies alike ; one examined is made up of motile hog cholera bacteria. 



December 17. No. 47, small female, died yesterday. Superficial 

 inguinals entirely hemorrhagic. Mesenteric glands slightly con- 



