■»l5 Progrefs of the Vaccine Inoeulalion, and 



afily wlih Dr. Jenner's account concerning the ftate of the 

 arms : he thinks fome new applications of a cauftic nature 

 mrceflary, in many cafes, to prevent fecondary fymptoms from 

 the fores; but in Dr. Woodville's Report, p. 155, my cor- 

 rcfpondcnts, and my own pra'flice, tliere has not been found 

 any want of applications for fuch a purpofc. 



5. Concerning the important point of the certainty of 

 the aftion of the oow-pox on the human conftitution in 

 producing uufufceptibility of taking fnbfequently the fmall- 

 pox ; I can only at prefent fay, that I have inoculated many 

 fcores with fmall-pox matter after the vaccine difeafe, and 

 never with the effeft of exciting the fmall-pox. But I have 

 had accounts fcnt to me, not of people taking the fmall-pox 

 after the inoculated cow-pox, but of thefc taking the fmall- 

 pox after the cow-pox in the cafual way. I have, indeed, 

 been defired to fee even fome of my own patients who, I 

 was acquainted, had taken the fmall-pox after the cow-pox; 

 but thefe cafes turned out to be either thofe in which the 

 cow-pox had not in reality preceded, or they were cafes of 

 merely local affedion from the inoculated fmall-pox. With 

 rcfpeft to the fafts of other practitioners, I (hall at a future 

 time make fome remarks on them, to render their accounts 

 confiftent with thofc of Dr. Jcnncr, Dr. Woodville, and 

 mine. In the mean time I will not allow that any per- 

 fon's evidence is on this point much to be depended upon, 

 nnlefs he really know what are characters of the cow-pox 

 puflule, and what are thofe of the variolous and fome other 

 common eruptions. 



From the preceding general refults, without entering into 

 a more particular account, I think we may fafely conclude, 

 that the cow-pox inoculation is attended with advantages fuf- 

 ficient to force its way fpeedily into general pra£tice, and that 

 of courfe it will fuperfcde and ultimately extinguifh the fmall- 

 pox: but this conclufion is only drawn provifionally, viz. that 

 no new fa6ls flmll arife adverfe to the experience now poflcfled. 

 With regard to the fecond objcft of this paper, Dr. Jen- 



5 *^^^* 



