PURIFICATION OF I.YMPH. 151 



ulcerating; the ulcers are, however, superficial in the 

 incisions on the inner part of the thighs, but deep and 

 extensive on the side of the sternum. 



As the specific features of this case had now passed 

 away, it is not necessary to continue the report ; we 

 should state, however, that the ulcer on the brisket very 

 slowly granidatcd, and was upwards of three weeks in 

 heahng. It is evident that the previous variolation did 

 not affect either the progress or termination of the 

 ovination, and in this paiticular, as well as in the local 

 effects produced by the small-pox virus, the experiment 

 may be taken as a type of others. 



The susceptibility of either man or animals to be 

 affected by an inoculation with the virus of sheep-pox 

 is, as before observed, a subject on which great dif- 

 ference of opinion prevails. But, nevertheless, we must 

 offer a few remarks upon it ; for the transmission of the 

 ovine lymph to the ox tribe is said by many to be the 

 best means of rendering it more suited for the inocula- 

 tion of sheep ; and it is likewise averred that ovination 

 of the hitman subject is equal to vaccination as a pro- 

 phylactic against small-pox. Sacco states, '' that ino- 

 culation with the virus of the small-pox of sheep is 

 often accompanied with a general eruption, but if the 

 same fluid be conveyed into the system of man, or the 

 cow, it never produces more than a local disease; 

 and if the ichor which has thus been regenerated in 

 either be used to inoculate sheep, it will be found that 

 its effects are invariably confined to the punctures. 

 This," he adds, " is very important ; for in the event of 

 an outbreak of sheep-pox, if we cannot procure lymph 

 to vaccinate the animals, we may ovinate the human 



