34 DISEASES OF SWINE AND OTHER ANIMALS. 



larf,'er and older, and exposed for several liours to the buruiug rays of 

 the sun, in an open larui-Avagon on a very hot day. It -was i)auting for 

 breath, and showed symptoms of congestion of the lungs. It v>.as put 

 in pen Xo. 1 with pig No. 1, before dead pig No. 4 had been removed. 



Aufjust llo. — Pig No. 1 perfectly hcalthly. Pig No. 7 very sick; 

 breathes nincty-tAvo times per minute ; shows plain symptoms of pleu- 

 rites; has no apx)etite, but is attentive and moves (piickly when dis- 

 turbed. It died at 8 o'clock p. m. Post-mortem examination revealed 

 pleurites and pericarditis; the whole surface of the lungs was loosely 

 agglutinated to costal pleura, and the substance of the same was gorged 

 Avitli exudation. I^'o other morbid changes whatever. Whether this was 

 a case of swine-plague or not, I leave to my readers to decide for them- 

 selves. I am decidedly of the opinion it was not, because none of the 

 other twenty pigs, except Nos. a and C (see account of them) have, up 

 to date, contracted the disease, as I have learned from a reliable source. 

 It is true two other pigs of the same lot showed some indisposition on 

 the 24:th, 25th, and 2Gth days of August, but were all right again the 

 ilext day, and are healthy yet. 



AiKjust 24. — Pig No. 1 perfectly healthy; vigorous appetite. 



August 25. — No change. 



August 26. — No change. 



August 27. — No change. 



August 28. — ^TS^eather very hot and sultry; in afternoon severe thun- 

 der-storm and rain, which effected a sudden cooling of the atmosphere. 

 Pig No. 1 in perfect health. 



August 29. — Pig No. 1 coughed once; being exposed in an open pen 

 to the changes of weather and temperature, it has possibly taken cold. 



August 30. — Pig No. 1 perfectly healthy; is A-ery lively, and has vigor- 

 ous appetite. 



August 31. — The same. 



September 1. — The same. 



September 2. — The same. 



September 3. — The same. 



Septemher 4. — The same. At 6.30 o'clock, p. m., diseased exx^eri- 

 mental pig No. 2 (see account of the same further down) was put in pen 

 No. 1 with pig No. 1. 



September 5. — Pig No. 1 perfectly healthy. Pig No. 2 eats nothing ; 

 shows plain sj^mptoms of pneumonia. 



September 6. — Pig No. 1 perfectly healthy. Pig No. 2 died at 6 o'clock, 

 I), m. {For post-mortem examination, which was made immediately, see 

 account of pig No. 2.) 



September 7. — Pig No. 1 perfectly healthj', and has remained so up to 

 date. Has always iirst-rate appetite, has never refused a meal, and is 

 to-day a strong, vigorous, and thri\T.ng x'>ig. (IMade use of the same for 

 another experiment on November 13.) 



2. Account of pigs Kos. 2 and 3. — August 21. — Both jiigs are i)erfectly 

 healthy; have good appetite, and are active and lively. 



August 22. — Both i^igs perfectly healthy. Inoculated both in right 

 ear at 1.30 o'clock, p. m., with blood-serum from the lungs of pig No. 4, 

 which had died at 1 o'clock, y>. m. The operation was performed by 

 means of a small inoculation-needle, made for the purpose of inocu- 

 lating sheep with the virus of sheej) pox. Each pig received two slight 

 ])unctures on the external surface of the ear; the serum inoculated 

 was less tlian one-fourth of a droj) per animal. The blood-serum used 

 was of a faint reddish color, and almost limpid. Examined under tho 



