[ 355 ] 
XXII. Some Calculations of the Number of Accidents or Deaths 
which happen in c on Je queue e of Parturition ;• and of the Propor- 
tion of Male to Female Children, as well as of Twins, tnon- 
frous Productions,, and Children, that are dead-born ; taken from 
the Midwifery Reports of the Weft’minfter General Difpen fary : 
with an Attempt to afeertain the Chance of Life at different 
Periods,, from Infancy to Twenty fix Tears of Age; and like- 
wife the Proportion, of Natives to the ref of the Inhabitants' 
of London. In a. Letter from Robert Bland, M. D. Phyf- 
■ci an- Man- Midwife to the Weftmihfter General Difpen fary, 
to Samuel. Foart Simmons, M. D. F. R . S,. 
Read' May io, i 781. 
< . ? L . *' ' '• " • . . • , - .• .9 
B E. A R SI. R ? . 
T HE great advantage of hofpitals and other fimilar inftitu- 
tionS, in improving and diffeminating medical know- 
ledge, is generally acknowledged but there are other purpofes 
they feem equally calculated to anfwer, which, though, fubor-- 
dinate to the former, ma^ yet deferve attention, as they may 
throw light upon, and perhaps finally determine, certain poli- 
tical queftions, about which various opinions are at prefent 
entertained. Thus, though it is known that this city contains 
perfons from various countries, and that a very fmall por- 
tion of its inhabitants are natives; yet the proportion which 
the latter hear to the aliens can at prefent only be gueffed at. 
But 
