[ 5^3 } 
IV. A Letter from J. Wall M. C D. to Edward 
Wilmot M. D. F. R. S. and Phyfician to 
His Majefty, concerning the Ufe of the Pe - 
ruvian Bark in the Small Pox. 
?<ead Nov, 5- r ~I“^HERE is not perhaps any Difeafe 
J 747* more fatal than the Small-Pox., 
when attended with Hemorrhages, purple Spots, 
and other terrible Symptoms. I think one 
might venture to affirm, that, in proportion to 
the Number of the Sick, fewer recover under 
thefe Circumftances, when treated by the com- 
mon Methods, than do even from the Plague itfdfi 
A Remedy therefore in any Degree adequate to the 
Malignancy of the Difeafe, which could reftore the 
broken Crafis of the Blood, and correct the putrid 
gangrenous Difpolition of the Juices, muft be of 
infinite Service to Mankind; and fuch a Remedy 
the Bark appears to be. 
The firft Author I meet with, who mentions the 
Ufe of the Bark in any Stage of the Small- Pox, is 
Dr. Morton ; and he recommends it only in the 
( a ) Decline of the Difeafe, when the fecondary Fever 
is 
(a) Ubi viribus v'eneni, durante exanthematum eruptions, 
ptyalifmo vel quovis alio modo ex parte fra&is, licet non pen:- 
tus deletis, atque inde ufque ad ftadium declinationis intus 
cohibitis et revirefeentibus, febris recidiva indolem prabuerit 
bmignam, periodicis exacerbationibus & remijfionibus fefe akernatim 
excipientibus (quern typum in variol^ mediis, prope ad malignas 
aceedentibus, fere temper obfervare licet) curatio nulla methodo 
G g g g aut 
