CONTAGIOUS DISEASES OF DOMESTICATED ANIMALS. 373 



Bpecks of extravasated blood in lower half and posterior part of the left lobe; in right 

 lobe, three-four I hs of tho -whole tissue hepatized and containing numerous specks of 

 extravasated blood in lower half and posterior part of the left lobe; in right lobe 

 three-fourths of the whole tissue hepatized and containing numerous specks of extra- 

 vasated blood, and also an abundance of fresh and partially coagulated exudation in 

 the pulmonal tissue, and on tho surface of tho pulmonal pleura. The lungs, but es- 

 pecially the right lobe, presented a very marked appearance — gray, brown, and red 

 hepatization — and fresh exudation in adjoining lobules alternating with each other. 

 Some serum in pericardium ; blood in the heart and everywhere else, dark-colored, aa 

 in all animals in which the pulmonal tissue constitutes the principal seat of the mor- 

 bid process; one ulcerous tiimor in colon; ciecum healthy. 



5. Fost mortem examination of another pig, nine months old, belonging to Mrs. Hamis. 

 Carcass in lirst-rate condition as to flesh; weight 220 pounds. Da,te, January IS. 



Morbid changes. — All lymphatic glands enlarged; pleura of right lobe of lungs par- 

 tially coalesced to costal plura ; fully two-thirds of the tissue of both lobes of lungs 

 hepatized — red and brown hepatization — and containing innumerable small patches 

 of extravasated blood and embolic hearths ; some serum in thoracic cavity and in 

 pericardium ; capillary vessels of the heart, but particularly of the auricles, very much 

 injected and tinged with dark-colored blood; numerous small red spots (extravasated 

 blood), as lai'ge as a millet-seed or smaller, in the serous membrane of the small intes- 

 tines (jejunum and duodenum); numerous large and, some of them, conflaent ulcerous 

 tumors penetrating into the external or serous membrane in ca3cum; several smaller 

 or medium-sized ulcerous tumors in colon; liver yellowish; contents of gall-bladder 

 semi-fluid and granular. 



6. Post mortem examination of a pig belonging to John Lord, Palmyra, Lee County, 

 Illinois. The pig was killed by bleeding to obtain material for experimental purposes. 

 Date, January 21. 



Morbid changes. — Besides those usually found in the organs of the chest and in the 

 lymphatic system wore a profuse proliferous growth of connective tissue and epithe- 

 lium cells in process of decay, presenting a profuse ulcerous tumor on the mucona 

 membrane of the stomach at its large cvirvature, but no ulcerous tumors in any other 

 intestine. 



7. Post mortem examination of two hogs belonging to G. Sartories, near Gap Grove, 

 Lee County, Illinois. Both animals had recovered from an attack of swine plague 

 over two montlis ago, and were butchered for pork. Date, January 22. One of the 

 hogs. No. 7, dressed 180 pounds, and the other one. No. 8, dressed 260 pounds. Both 

 were of about the same age, and over a year old. 



Morbid changes in No. 7. — Pulmonal and costal pleura connected everywhere by means 

 of a loose and very meshy connective tissue, which could be torn without using great 

 force; remnants of partially absorbed hepatization in anterior lobes of the lungs; 

 firm and inseparable adhesion (union) almost everywhere between the external surface 

 of the heart and the internal surface of the pericardium. (The animal, before it was 

 killed, exhibited asthmatic symptoms.) No other morbid changes could be found, 

 except enlargement of most of the lymphatic glands situated in the thoracic and 

 abdominal cavities. 



Morbid changes in No. 8. — All lymphatic glands considerably enlarged; remnants of 

 hepatization, but yet very distinct, and inclosing two nodules (one of the size of a 

 small chen-y, and the other the size of a large pea), sequestered by an envelope of 

 firm and solid connective tissue in the anterior parts of the lungs ; no adhesion between 

 the pleuras, and no other morbid changes. (In the chapter, headed "Contagion" I 

 shall have to refer again to these two animals.) 



9, 10. Post mortem examination of two hogs belonging to John Lamken, near Prairie- 

 ville, Lee County, Ilhnois. The same had been afflicted with swine plague, but had 

 recovered over two months ago, and were butchered for pork. Both were of about the 

 same age and size, and dressed each about 275 pounds. Date, February 3. No morbid 

 changes in hog No. 9, except small remnants of hepatization in the lungs ; and in hog 

 No. 10 no morbid changes, exce])t a small and unimportant scar in the caecum, indi- 

 cating the foi-mer existence of an ulcerous tumor. Both hogs xmdoubtedly had only 

 a very mild attack of swine plague, otherwise more important morbid changes would 

 have been left behind. If any exudation or hepatization had existed in the lungs of 

 hog No. 10 — and it would be very strange if it had not, liecause I never found it en- 

 tirely wanting in any other of the numerous ^Josi mortem examinations I had an occa- 

 ion to make (about (Mie hundred since August 1) — it must have been perfectly ab- 

 sorbed, becaiiso no trace could be discovered. 



11. Post mortem examination of a pig belonging to Mr. Horace McKay, twelve miles 

 north of Chami)aign, Champaign County, Illinois. A small, evidently stunted animal, 

 which had been sick for two months, had a large tumor of the size of a man's fiston the left , 

 side of the anterior part, of its nose. The temperature of the animal, which was killed 

 by bleeding, was 104.8^ F. Date, June 17. Morbid changes: The tumor was hard, 

 luaLuly composed of a dense comiective tissue, similar to that of an intestinal ulcerous 



