( iop ) 
V. of a Letter from Dr, Nettleton, ^hyji^ 
dan at Halifax, to X)r.Jurin, (1^. S. Seer, con^ 
cernin^ the Inoculation of the Small Pox, 
and the Mortality of that Diftemper in the ?iatu» 
ral Way, 
HERE are two Propofitions advanced by the Fa- 
vourers of the Pradiice of Inoculation, concern- 
ing which the Publick feems to require more full Satif- 
fa&ion. That the Dijiemper rais'd by Inoculation is 
really the Small Tox ; and, That it is much more 
mild and favourable^ and far lefs mortal than the 
natural fort. 
The former of thele is not fb much dilputed now, 
as it was at firft, when this Method was introduced, 
nor can it be made a doubt of by any one, who 
has feen thole that have been inoculated, and has allb 
been much converlant in the natural Small Pox. 
There is ullially no manner of diflerence to be obler- 
ved betwixt the one fort and the other, when the 
Number of Pullules is nearly the fame ; but in both 
there are almoll infinite Degrees of the Diftemper, ac- 
cording ta the difference of that Number. All the 
Variation that can be perceived of the Ingrafted Small 
Pox from the Natural, is, that in the former the Pu-r 
llules are commonly fewer in Number, and all the red 
of the Symptoms are in the fame Proportion, more fa- 
vourable. They exactly refemble, what we call the Di- 
Hindi Sort : the Symptoms before the Eruption are the 
very lame, and when the Pullules begin to rile, their 
Appearance is the fame, as well as their Periods of 
Maturation and Declenfion ; they are at firll of the 
fame florid, rofy Colour, and when fully ripe, of as 
2 fair 
