ANTMAL VACCINATION. 
249 
being. It may, for that matter, be shorn of its contagious 
properties altogether/ 5 This remark can apparently only 
mean that such lymph induces a new species of smallpox, 
as yet unrecognised, which has none of the characteristics of 
that disease, since it is neither eruptive nor contagious. Dr. 
Cameron has evidently mastered the experiments of the Lyons 
Commission on the subject; but I should much doubt whether 
he has studied with equal assiduity the important work by Mr. 
Ceely, which appeared in the early f Transactions 5 of this 
Association, and which has now convinced Sir Thomas 
Watson. It is to be feared, indeed, that Mr. Ceely 5 s pains¬ 
taking researches into this question have never been suffi¬ 
ciently known or thoroughly understood. Abroad especially, 
they are not so well known as they deserve ; and as M. Chau- 
veau and his colleagues state that they had not seen Mr. Ceely’s 
iC plates/ 5 it is more than likely that they had not seen his re¬ 
port. If M. Chauveau and his colleagues had seen Mr. Ceely’s 
plates, they would have learned that their own local results 
on cattle had been quite well known in this country twenty-five 
years before. The local effects produced by their inoculations 
were not in any respect greater than those produced by Air. 
Ceely in cases which he regarded as failures, nor than in 
cases which the authors themselves at first put aside as failures. 
It is not in the least improbable that, if Mr. Ceely had dealt 
with the tumid papules that arose on the cows, as M. Chauveau 
did (viz. in removing a quantity of them from the cows, and 
scraping their inner surface), he might have got from them 
the same stuff that was put in, stuff which, in the words of 
the late Dr. Seaton, “ had undergone no sort of transforma¬ 
tion whatever, but which had lain where it was put, as in a 
pouch, quite inert, giving rise only to local irritation without 
inducing any sort of general affection or disease.” It is 
significant that M. Bouley, having inoculated a cow with 
variola with the same results as M. Chauveau obtained, vacci¬ 
nated it afterwards, with the result of producing regular cow- 
pox ; and Air. Ceely, in his variolous experiments on cattle, 
constantly produced the phenomena described by M. Chauveau 
and found subsequent vaccination of these animals, in the 
great majority of cases, successful. The Lyons experimenters 
did not, it is true, in the least dispute Air. Ceely 5 s account of 
the results he met with, but maintained that what he mistook 
on the cow for cow-pox vesicles was in reality the variolous 
eruption ; and what he produced on children taken from these 
vesicles was not, as he imagined, cow-pox at all, but simply 
inoculated smallpox. I am, &c., Frithiof. 
February 28th, 1880. 
