VACCINAl'ION. 139 



These particulars indirectly bear on the subject of 

 this treatise, as by a knowledge of such facts vete- 

 rinary surgeons were induced to test the power of 

 vaccination to prevent the ovine-pox. The accounts 

 which are recorded by the continental writers of the 

 success of the operation vary so much, that we shall 

 give somewhat at length the statements of those who 

 have investigated the matter. It appears from Captain 

 Carr's remarks, that in the part of Germany where he 

 resides, the vaccination of sheep is not practised. He 

 thus writes : — " I would also venture to suggest that it 

 might be worth while to make experiments with the 

 cow-pox on sheep, since it may possibly produce an 

 amelioration of their disease, similar to that which the 

 himian race has derived from the introduction of vac- 

 cination*." 



Mr. Mayer, who has been at the trouble to collate 

 from the French, observes, that they '' have made va- 

 ried and numerous experiments to ascertain whether, 

 by vaccinating sheep with the matter of cow-pox, it 

 would not protect them from the small-pox ; it how- 

 ever failed in doing so : the fever never developed itself 

 properly in them, and the pock w-as very imperfectly 

 formed ; but when inoculated afterwards \\ith the matter 

 of small-pox, they immediately took the disease, and 

 also caught it equally by infection. When the animal 

 was inocnlated with the small-pox matter first, and 

 after its recovery vaccinated, it was no longer sus- 

 ceptible of the action of the vaccine matter even 

 locallyf." 



* Sheep-pox, p. 14. 



t Veterinarian, vol. xx, j^agv 629. 



