286 HOG CHOLERA 



the serum into the right axillary space. The same virus 

 shall be used for the inoculation of all pigs in the test 

 and shall be administered by a veterinary inspector. 



Paragraph 4. A veterinary inspector shall indicate 

 the pigs which shall receive serum with virus and those 

 which shall receive the virus only in each serum test. 



Paragraph 5. Pigs which are injected with serum in 

 serum tests shall be held under the observation of a 

 veterinary inspector for a period of 21 days, or as much 

 longer as the inspector in charge may deem necessary 

 to determine the health of the animals and the purity 

 and potency of the serum under test. 



Paragraph 6. Pigs in serum tests which receive virus 

 only shall be held under the observation of a veterinary 

 inspector and shall not be removed from the test unless 

 and until released by such an inspector who will permit 

 their removal when exhibiting well-marked symptoms of 

 hog cholera, as described in rule D, paragraph 2, sec- 

 tion 5, of this regulation, or after they have served their 

 purpose in the tests. 



Paragraph 7. The temperature of each pig used in a 

 test of anti-hog-cholera serum shall be taken and re- 

 corded shortly before each test is inaugurated. 



Paragraph 8. Temperatures of control pigs and sick 

 serum-treated pigs in serum tests shall be procured daily 

 throughout the test period, with the possible exception of 

 Sundays and holidays, and an accurate report of these 

 temperatures rendered by the establishment to the in- 

 spector in charge as he may direct. 



Paragraph 9. When serum-treated pigs do not ex- 

 hibit symptoms of sickness their temperatures need not 

 be taken except when required by the inspector in charge 

 or his assistants to determine more accurately the true 

 physical condition of the animals under observation. 



SECTION 5. Paragraph 1. The following principle 



