Bills of Mortality at York. 41 
the prefent average of annual deaths. This is certainly a great 
rife in the fcale of healthiness-. From being near as fatal as 
London we have become lefs fo than many country places, as 
will appear from the following comparative view of the propoi> 
tion of deaths in different places. 
Vienpa, 
1 
in 
1 9 1 dies eyery year 
London, 
t 
in 
20 f 
Edinburgh, 
1 
in 
20*. 
* 
-Berlin, 
1 
in 
21 
Rome, 
1 
in 
22 
' 
Amfterdam, 
1 
in 
9 . 9 
l) 1 • 17 4 
Dublin, 
1 
in 
2 2 
Leeds, 
1 
in 
22 
Northampton, 
1 
in 
26 
Shrewsbury, 
in 
26 
J • • . JL . > 4 * . 
Liverpool, 
1 
in 
2 7 * 
^ / TO 
Manchefter, 
1 
in 
28 
York, 
1 
in 
2$i t 
Hence in 1735, at York it would requ ire 215 years to burv 
a number equal to that of its inhabitants ; but in 1 776, 28^ 
years would be required for the fame. One third lefs die yearly 
now than in the former period ; and we are certainly advancing 
kill higher, for in 1 777 the births were more than in any for- 
mer year, being 516, the burials 464. 
As there is no fettled manufactory here, there is little increafe 
or decreafe of the people by acquifition or emigration, and pro- 
bably what may happen in either cafe is nearly balanced by the 
-other. 
It appears from tab. 4. that the fummer feafon is by much 
the healthiefl at York; autumn the next; then the fpring ; 
winter being by far the mofl fatal. Dr. percival found much 
Von. LXXIh G the 
