€o Comparison of the Small' Pox 



so two, or twentv such instances, scarce form the shadow 

 of a just objeotion against tliis grand improvetnent in the 

 art of preservaiion. 



I have the honour to remain, dear sir, 



Your obliged and faitliful friend, 



Robert John Thornton. 



VI. ComparisQJi of the Small-Vox and Cow-Pock Inscula- 

 tioii. By Charles Brandon Tryk, Esq. Senior Sur- 

 geon to the County Hospital^ Gloucester. 



SIK, 



W HEN Dr. Jenner first introduced vaccine inoculation, T 

 declined adopting it. Inoculation with the small-pox I had 

 long practised without a sinsjle loss ; I had also fixed opi- 

 nions in physiolotjy which militated against what was ad- 

 vanced bv himself and his friends. In process of time, 

 however, such a mass of clear, undisputed, decisive evi- 

 dence came forward in support of the newly discovered pre- 

 servative, as to be irresistible to a mind not hardened be- 

 yond the susceptilHity of conviction ; and, consequently, 

 whatever might have been my previous notions, or my ha- 

 bits of thinking, I could no longer persist in the use of 

 Vcn'iohwi viaiter. 



1 will not say that my own practice in Inoculating with 

 cow-pox matter has been so considerable as that of many 

 others, or that I have made a variety of experiments with 

 a view to understand or explain anv of the phair.omena of 

 the disease; but I will sav that in the small-pox, both na- 

 tural and inoculated, my experience has been ample ; and 

 from that experience alone, I was enabled to compare the 

 merits of small-pox inoculation with those ascribed to the 

 Jcnncrian practice. From my own experience, then, I can 

 assert, lirst, that whatever has been said against the suffi- 

 ciency of cow-pock matter as a security against variolous 

 infection, mav be also said with truth against small-pox 

 niatter, as a similar security. From my own experience I 

 can, secondly, assert, that the subsequent ill etlccls which 

 have been said to follow cow-pox, have, in a ten-fold greater 

 deeree, followed small-pox. And lastly, from n)y own 

 knowledge, I ran assert (and who of long standing in the 

 profession cannot do the same?) that many instances of 

 mortality have happened in small-pox inoculation, whilst 



amongst 



