202 



G. G. Heslop.- 



time prior to being tested. The length of time between the pro- 

 phylactic injection, and the test varied from 15 days with one 

 lot of animals to 6 months with another lot. It is worthy of 

 note that in all cases where an animal which had been injected 

 with virus subcutaneously in the tail was tested, the reaction to 

 the test was negative, excepting in those cases where lesions of 

 contagious pleuro-pneumonia could be demonstrated in the lungs- 

 on post-mortem examination, in which cases the reactions to the^ 

 tests were positive. 



Two of the animals tested "had each reacted so violently to the. 

 prophylactic injection of virus in the tail, that portion of the 

 tail was necrotic at the time that the blood sample was taken for 

 testing. These two animals, on testing, gave negative comple- 

 ment fixation reactions, and showed no lesions of contagious, 

 pleuro-pneumonia in the lungs on post-mortem examination. 



The sera tested, the results of the tests, and the post-mortem: 

 findings in each case can be tabulated as follow : — 



Serum 

 Number. 



Result of Complement 

 fixation test. 



Result of P.M. examination of the 

 animal supplying the tes 1 ". serum. 



40 



Positive 



41 

 42 

 43 

 44 



Negative 



• . Negative 



Negative 



Negative 



45 

 46 

 47 

 48 



Negative 

 Negative 

 Negative 

 Positive 



49 



Positive 



50 



Positive 



51 



Positive 



52 



Doubtful 



53 



Positive 



54 

 55 



Negative 

 Negative 



Active C.P.P., involving practically the whole- 



of one lung 

 Hydatids in lun« — no lesions of C.P.P. 

 No lesions of C.P.P. 

 No lesions of C.P.P. 

 Tuberculosis in lungs and lymph glands.. 



No lesions of C.P.P. 

 No lesions of_C.P.P. 

 No lesions of C.P.P. 

 No lesions of C.P.P. 

 Small chronic encapsulated lesion of 



C.P.P. in one lung. Tuberculosis in? 



pharyngeal lymph glands. 

 Active C.P.P. involving whole of right 



lung. 

 Small and very early lesion of C.P.P. on 



margin of left lung. 

 Active C.P.P. involving practically the- 



whole of the left lung. 

 Calf 2 days old. No lesions of C.P.P.. 



Mother was infected (see No. 49). 

 No lesions of C.P.P. in the lungs. Ani- 

 mal had not been inoculated. 

 No lesions of C.P.P. 

 Extensive hydatid infestation. No lesion* 



of C.P.P. 



