[ 428 ] 
The diftricl of vaud, in Switzerland, in 1766, con- 
tained 1 1 295 1 inhabitants. The average of deaths for 
ten preceding years had been 2504. Only i in 45, there- 
fore, died annually ( 7 A 
The number of inhabitants in the paridi of ack- 
WORTH, in the county of York, in 1757, was 603 ; and 
the average of deaths for ten years had been i o-^^, or 
a 5 6th part. In 1767, the inhabitants were increafed to 
728; and the annual average of deaths was 151^, or 
nearly a 47 th partr^;. 
The realbnof this ftriking difference between the rate 
of human mortality in towns and in country pariflies and 
villages mulf be, firft, the luxury and the irregular modes 
of life which prevail in towns ; and, fecondly, the foulnefs 
of the air. But it has been inquired, whether the migra- 
tions of people from the country to towns may not pro- 
duce this difference,by leffening the proportion of inhabi- 
tants that die in the country, and increafing the fame pro- 
portion in towns ? In anfwer to this enquiry I would ob- 
ferve : firft, that this difference bemg a difference of near 
a half, it is apparently much greater than can be accounted 
for by any fuch caufe. But, fecondly, it fliould be confi- 
fyj See M. muret’s Memoir on the State of Population, in the de 
Vaud, printed at Bern, in 1766; and the Supplement to the Obfervations on 
Reverfionary Payments, p. 358. 3d edit. 
(gj I owe this information concerning the parlfh of Ack worth to a curious 
regifter kept there by Dr. lee. I have taken the liberty to Infert this regifler 
in the poftfcript, together with the annual regifler and furvey of Rome from 
1762 to 1771. 
2 
dered, 
