432 . ANNUAL REIPORT OF THE Off. Doc. 



DE. PEARSON: The vaccination of calves in our experiment 

 Vtovk has been very successful. We are now practicing it very 

 freelj^ on quite a number of farm herds throughout the State. 



A Member: Is it a protection? 



DR. PEARSON: I think it is a protection for the time, but for 

 just how long- I do not know. A German authority has stated that 

 the protection is for life; I criticised it, and was severely criticised 

 myself for it; I said it was ridiculous to claim that it protected for 

 life when it had only been tried for a few years. And French tests 

 show that the immunity expires after a certain time, and then the 

 animal is liable to contract the disease. They have found by their 

 experiments that the animal is usually protected for about three 

 years. They have proven this by putting the vaccinated animals 

 in among a herd in which there are some advanced cases of tuber- 

 culosis, and noting results, and animals that have been vaccinated 

 for more than that length of time, and which are exposed, show 

 decided lesions of tuberculosis. I find, however, that animals should 

 be re-vaccinated after a period of two years. I look upon the whole 

 treatment as exceedingly interesting and instructive, and of great 

 importance to the farmer. 



MR. VAN ALSTYNE: I would like to ask the Doctor how 

 expensive it would be to the farmer? 



DR. PEARSON: All tTie herds that are now being vaccinated are 

 treated at the expense of the State. 



MR. VAN ALSTYNE: Exactly what will be the cost to the 

 farmer where the State does not pay for it? 



DR. PEARSON: Well, if the Live Stock Board continues to con- 

 duct the work it will not be more expensive in the future than it 

 is now; I do not know whether this will be done, but I think it ought 

 to be. 



MR. VAN ALSTYNE: But what will it cost the farmer now? 



DR. PEARSON: It does not cost anything; the State does it 

 for you. 



MR. VAN ALSTYNE: Exactly; but if the State did not do it, 

 what would it cost the farmer? 



DR. PEARSON: I do not know what the veterinary surgeon 

 would charge for doing the work, but that would be the chief cost. 



The CHAIRMAN: Are there any further questions to ask the 

 Veterinarian? If not, what disposition shall be made of his report? 



It was regularly moved and seconded that the report be received 

 and placed on file. Agreed to. 



The CHAIRMAN: As Chairman of the Committee on Credentials, 

 I would say that the Lancaster Agricultural Society has elected 

 Hon. "W. H. Brosius a member of the Board for the next three 

 years, and I would move that he be elected a member of the Board. 



Duly seconded, and agreed to. 



