430 Of the Checks to Population Bk. ii. 



number divided by the average of the births will 

 give a proportion of births to the population as 1 

 to rather less than 29-*-, instead of 30, which will 

 make a considerable difference. 



In the same manner, if we divide the population 

 of 1810 by the average of the burials for the pre- 

 ceding five years, with the addition of one-12th, 

 the mortality will appear to be as 1 in nearly 

 50 ; but upon the same grounds as with regard 

 to the births, an average of the burials for five 

 years, compared with the population at the end 

 of such term, must give the proportion of burials 

 too small; and further, it is known, in the present 

 case, that the proportion of burials to the popula- 

 tion by no means continued the same during the 

 whole time. In fact the registers clearly shew an 

 improvement in the healthiness of the country, 

 and a diminution of mortality progressively 

 through the ten years ; and while the average 

 number of annual births increased from 263,000 

 to 287,000, or more than one-8th, the burials 

 increased only from 192,000 to 196,000 or one- 

 48th. It is obviously necessary then for the pur- 

 pose in view to compare the average mortality 

 with the average or mean population. 



The whole number of burials in the ten years, 

 with the addition of one-12th, is, as was before 

 stated, 2,112,704, and the mean population 

 9,887,000. The latter, divided by the former, 

 gives the annual average of burials compared with 

 the population as 1 to rather less than 47. But a 

 proportion of births as 1 to 291, with a proportion 



