DISEASES OF SWINE AND OTHEE ANIMALS. 31 



same auiiual, and that sometimes some and sometimes others are more 

 developed and constitute the immediate cause of death, has already 

 been indicated, and does not need any further explanation. To convey, 

 however, a clearer idea of the morbid features and changes presented 

 after death, I will copy from my notes the result of the post-mortem 

 examinations of a few of my experimental pigs. Of pigs jSTos. 5 and G 

 the symptoms, observed during life, have already been noted. 



Post-mortem examination of piy Xo. 5. — On opening the chest, the ribs, 

 usually tough in a joung animal, broke very easily, and seemed to be 

 deficient in organic substances. No serum in the chest ; jmlmonal pleura 

 rough, partially coated Avith plastic exudation; lower half of both lobes 

 of lungs hepatized; no serum in the pericardium, but apex of heart 

 tinnly coalesced with the inner surface of the pericardium ; thick, white, 

 and frothy mucus, but no stronr/Hi paradoxi in trachea and bronchial 

 tubes. Ciccum and colon hrmly agglutinated to each other with their 

 external surfaces; adhesion separable only by means of the knife. Nu- 

 merous large and small ulcerous tumors or morbid growths in both 

 caecum and colon. (See photograph, Plate V, which shows the ctecum, 

 and Plate YI, which shows the colon, natural size of pig No. 5.) Lym- 

 phatic and mesenteric glands enlarged. Ulcerous decay in mucous 

 membrane of the stomach. (See photograph, Plate YIII, which presents 

 the interior surface of the stomach of pig No. 5, natural size.) Besides 

 those essential changes mentioned, one large nematoid was found in the 

 ductus choledochus, extending from the duodenum through the chole- 

 dochus and the gall-bladder into an hepatic duct. Another worm of 

 the same kind was found in the c;ecum. 



Autopsy of pig No. C. — An abscess in right' side of the scrotum, 

 about seven-eighths of an inch in diameter, and connected with idcera- 

 tion in right spermatic chord. Inguinal and axillary lyinphatic glands 

 considerably enlarged. One-fourth of right and one-iifth of left lobe 

 of lungs hepatized; the rest gorged -svith blood-serum or exudation. 

 Ciecmn and colon agglutinated to each other ; ciecum also adhering to 

 peritoneum. Mesenteric glands very much enlarged ; right spermatic 

 chord ulcerated. (Pig had been castrated a few weeks before it con- 

 tracted the disease.) Extensive morbid growth, in process of decay, in 

 ciecum, and also a large number in colon. Some exudation on lower 

 surface of spleen. Ulcerous decay in mucous membrane of anterior 

 portion of stomach, and wine-colored intiltration and extravasations of 

 blood in mucous membrane of pyloric portion of same intestine. 



Autopsj/ of pif/ B. — Some redness between hind legs and on lower sur- 

 face of the body ; greenish mucus oozing from the nose ; axillary and 

 inguinal glands very much enlarged; ribs tleticient in organic, substances, 

 at any rate very brittle; both lungs spotted all over, indicating i)laiuly 

 capillary embolism in early stage of developuient ; hei)atization limited, 

 iust counnencing; lymphatic glands in chest very nuich (ndarged ; the 

 heart, but especially the auricles, very much congested ; auricles almost 

 black; small quantity of straM-colored serum (not exceeding two ounces) 

 in thoracic cavity, and still less in ])ericardium. In the abdomijial cav- 

 ity mucous membrane of anteiior part of stomach Avine-colored ; some 

 ditfuse morbid growth, in i)rocess of decay, in posterior (pyloric) portion 

 of same membrane. No food whatever in stonmch and intestines; bile 

 thickened, semi-solid; no ulceration nor any morbid growth whatever 

 in ca'cum, colon, or any other intestine. 



Eesults of post-mortem examination of experimental pitj Xo. VI. — Decay- 

 ing blotches or no<lules of the size of a hve-cent piece and smaller on 

 skin of lower surface of body and between the legs; right si)ermatic 



