ILLUSTRATIONS 



PAGE 



1. Shoats affected with acute hog cholera 37 



2. Lung of pig showing ecchymoses due to acute hog 



cholera 46 



3. Left auricle of pig's heart showing petechise due to 



acute hog cholera 48 



4. Spleens showing hemorrhages which are rather typ- 



ical of acute hog cholera 49 



5. Kidney of pig showing numerous petechiae due to 



acute hog cholera 51 



6. Lymph glands of pig showing hemorrhages caused 



by acute hog cholera 54 



7. Bleeding room in anti-hog-cholera serum laboratory. 



(Courtesy Pitman-Moore Biological Laboratories) 77 



8. Corner of anti-hog-cholera serum laboratory. New 



York State Veterinary College at Cornell Uni- 

 versity 79 



9. Post-mortem room where autopsies on virus pigs 



are held 88 



10. A close view showing the hypering process ... 91 



11. Bleeding unit, and hog prepared for bleeding . . 99 



12. Bleeding for serum . . . . . . -. . . . 101 



13. J Testing anti-hog-cholera serum 107 



14. Injecting anti-hog-cholera serum in the ham . . . 119 



ix 



