C 27 ] 
Whence, making *?=-, S 
a ^ a* b a 1 c 
A-\-Bx-\-Cx 1J r c Dx z '\-Ex*, &c. to exprefs the fe- 
ries fought, the feveral values of A, B , < 7 , D, &c. 
will be exhibited by the very equations brought out 
in the refolution of the preceding problem. 
V. A Letter from George Bayly M. D. of 
Chichefter, to Henry Pemberton M. D. 
J P. R. S. &*c. of the Ufe of the Bark in 
the Small-Pox. 
fired a more particular account, is, as far as I have 
been able to recolledt at this diftance of time, as 
follows. 
The patient, a gentlewoman of a fat corpulent 
habit, and healthy conftitution, but 73 years of age, 
was, on the 6 day of December 1742, feiz’d with 
the common fymptoms of a fever, attended with 
a fudden great lofs of ftrength ; fo that, being car- 
ried to bed, flie was not able to fit upright in it 
for the leaf: fpace of time, without being held up by 
her affiftant. 
Dear Sir, 
Read Jan. 10. 
1750. 
T hi 
in 
HE cafe I lately mention’d to you 
in converfation, of which you de- 
D 2 
She 
