SMALL-POX. 353 



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

 flock were inoculated j 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.' " 



