CONTAGIOUS DISEASES OP DOMESTICATED ANIMALS. 411 



January 26. — Pigs Nos. 1 and 2 appear to be healthy, and have good appetite. Pi;; 

 No. 3, the one iiiocnlated -with the old filti:ite, shotrs plain eigns of indisposition, such 

 as drooping oftlio Lead, cousidcrable cougliiug, and partioA loss of aiipetite. 



January 27. — Pig No. 1 shows uumistakablo symptoms of disease, such as coughing, 

 drooping of iLe head, loss of appetite, &c., and is less lively in its movements than 

 formerly. Pig No. 3 coughs repeatedly, and has very little appetite, but is apparently 

 thirsty. Both pigs (Nos. 1 and 3) have lost the curl in the tail. Pig No. 2 is perfectly 

 healthy, and has a vigorous appetite. This pig has received no carbolic acid during 

 the last four or five days, but now receives it again regularly three times a day, each 

 time sis to seven or eight drops in its water for drinkiug. 



January 28. — Pig No. 1 is worse, coughs a good deal, droops its he.ad, eats scarcely 

 anything, and is very thirsty, but is still savage when touched. It may be remarked 

 here that all three pigs, being of "scrab" stock, with a slight mixture of Poland 

 China and Berkshire, and having been raised in a large herd, accustomed to large 

 fielda or pastures, were natni-ally very savage, which made a close examination exceed- 

 ingly difficult. For the same reason I found it impossible to ascertain the temperature 

 without using force, and causing thereby an abnormal rise. Pig No. 3 coughs repeat- 

 edly, breathes faster than usual, eats very little, is thu-sty, and its coat of hair looks 

 rough. Pig No. 2 is perfectly healthy ; its coat of hair is sleek and smooth. 



January 29. — Pig No. 1 is worse, and evidently eufiering. Its respiration is very 

 much accelerated; the coughing is worse and more frequent; the thirst is increased; 

 appetite is wanting, and the coat of hair is looking rou^h and unclean. Pig No. 3 eats 

 a little more, but still coughs very much. Pig No. 2 has a vigorous api^etite, and is 

 perfectly healthy. 



January 30. — Pig No. 1 coughs a great deal, is evidently in distress, and does not 

 touch its food. Its coat of hair is rough, and emaciation is visible. Pig No. 3 has 

 more appetite, eats about half its usual ration, and appears to be livelier, but is still 

 coughing. Pig No. 2 is perfectly healthy. 



January 21. — Pig No. 1 about the same as yesterday; at any rate not worse. Pig 

 No. 3 is improving. Pig No. 2 is all right in every respect. 



February 1. — Pig No. 1 eats some, but is coughing a great deal, and is thirsty. Pig 

 No. 3 cats more, but not a full meal, coughs less, breathes freer, and its coat of hair 

 looks less rough. Pig No. 2 eats vigorously, and is healthy. 



February 2. — Pig No. 1 eats some, about half a meal, and don't seem to he as thirsty 

 as formcT-ly. Pig No. 3 eats nearly a full meal, and coughs very little. Pig No. 2 is 

 all right. 



February 3. — Pig No. 1 is improving, eats about half a meal, but is still coughing. 

 Pig No. 3 has regained its ai)i)etite, and coughs very little. Pig No. 2 is as healthy as 

 ever. 



February 4. — Pig No. 1 is improving, eats more than half a meal, and coughs bnt little. 

 Pig No. 3 has a good appetite, and seems to have fully recovered from its slight attack. 

 Pig No. 2 is perfectly healthy, and the use of carbohc acid is dispensed with. It has 

 received in all a little over half an ounce. Have never heard it cough. 



February 5. — Pig No. 1 is improving, eats nearly a full meal, coughs very little, and 

 its coat of hair is smooth again. Pig No. 3 has fully recovered, and pig No. 2 is 

 healthy. 



February 6. — Pig No. 1 eats well again, and shows no sign of disease, except now and 

 then a little coughing. Pigs Nos. 2 and 3 are healthy and ready for another experi- 

 ment. When the three pigs v/ere received, pig No. 1 was slightly heavier than pig 

 No. 3, and weighed over ten pounds more than pig No. 2. At present (February 6), 

 pig No. 2 is the heaviest, a,nd weighs at least twenty pounds more than No. 1, and tea 

 pounds more than No. 3. 



When pig ISTo. 1 commenced to sliow signs of recovery, jiig 'So. 3 liacl 

 only a very slight attack, and was not expected to die. I thought of 

 kilHng it for the purpose of ascertaining the extent and the nature of the 

 morbid changes existing, but as I intended to make more experiments, 

 and as it is not easy to obtain suitable material v/hen wanted, I conclu- 

 ded to allow the animal to recover, and to save it for further use, but on 

 February 8, I was taken sick myself, and was thus compelled to aban- 

 don my phms for the time being. From Fabniniy to February 12, 

 the day on which I left Oquawka, all three pigs were doing well ana 

 improving. 



MICEOSCOPIC EXAMINATION. 



Special attention has been paid to the examination of the water of 

 such running streamlets, small creeks, and stagnant pools as were ac- 



