124 



Journal of Agricultural Research 



Vol. XIII, No. 2 



This experiment is not quite as satisfactory as the three others, as the 

 two exposed pigs did not die as a result of the virus injection which was 

 given them in order to test their susceptibility. They undoubtedly 

 possessed some degree of natural immunity, but the fact that they both 

 sickened after the virus injection serves to establish their susceptibility. 



Experiment XIII. — Pig 1070 was injected with 5 c. c. of a normal 

 salt dilution of nasal secretion from pig 1032X on October 16, 1916, and 

 developed a typical, acute case of hog cholera, but made a good recovery. 

 This pig was one of those used in the experiment to determine the infec- 

 tiousness of the blood, excreta, and secretions of cholera hogs, the record 

 of which is included in Table II. 



The clinical record is given in full in Table XII. 



Table XII. — Record of recovered pig loyo. 



1916. 

 October 17 . . . 

 October 18. . 

 October 19 . . , 

 October 20. . . 

 October 21.., 

 October 22 . . . 

 October 23 . . . 

 October 24 . . . 

 October 25. . . 

 October 26 . . . 

 October 27 . . . 

 October 28 . . . 

 October 29 . . . 

 October 30. . . 

 October 31... 

 November i . . 

 November 2, . 

 November 3 . . 

 November 4. . 

 November 5 . . 

 November 6. . 

 November 7 . . 

 November 8. . 

 November 9. . 

 November 10. 

 November 11. 

 November 12. 

 November 13. 

 November 14. 

 November 15. 

 November 16. 

 November 17. 

 November 18. 

 November 19. 

 November 20. 

 November 2 1 . 

 November 22. 

 November 23. 

 November 24. 

 November 25. 



Tempera- 

 ture. 



°F. 

 103.6 



103-7 

 103. I 

 103.8 

 106. 5 



107. o 



loS-S 

 106. 7 

 106.5 

 106. I 

 105.9 



104. 8 

 103. o 

 103.8 



102. 7 



103. 6 

 103.9 



105.0 



100. 6 

 102. 9 

 103.8 

 102. 9 



101. o 



101. o 



102. I 

 loi. 4 

 loi. 6 

 102. o 



lOI. o 



101. o 



102. 3 

 102.8 

 102. 8 



102. 8 

 104. 4 



103. o 



Symptoms. 



Normal. 



Do. 



Do. 



Do. 

 Off feed. 



Do. 



Do. 



Do. 



Do. 

 Off feed ; purple ears. 



Do. 

 Off feed; conjunctivitis; weakness. 



Do. 



Do. 



Do. 



Do. 



Do. 

 Ate some feed. 



Do. 



Do. 

 Off feed ; diarrhea. 



Do. 



Do. 



Do. 



Do. 

 Ate some feed ; diarrhea. 



Do. 



Do. 



Do. 



Do. 



Do. 



Do. 



Do. 



Do. 



Do. 



Do. 



Do. 



Do. 



Do. 

 Ate feed. 



