SMALL-POX. 353 



'Nearly three weeks have now elapsed since Mr. Parry's 

 flock were inoculated ; and it is worthy of remark that out of 

 446 ewes in which the disease was thus artificially, as it were, 

 produced, he has lost only four; while of those which took the 

 disease naturally, the losses have already been sixty per cent., 

 and there are numbers of other sheep of whose recovery there 

 is little hope, — ^indeed, the total loss of those which have taken 

 the disease in a natural way, Mr. Parry estimates will not be 

 much short of 65 per cent. Putting this, therefore, in contrast 

 with the results after inoculation — which, under the most 

 favorable circumstances, are not expected to average a mor- 

 tality of more than five per cent. — the desirableness of 

 inoculation immediately upon the appearance of the disease 

 in a flock is placed beyond doubt.' " 



