336 



Mr. Lubbock on the Comparison of 



I have placed, for the sake of conipari.son, the results given 

 by the census of 1821 with the results deduced from theory, 

 and they agree, I think, within the limits of the errors of which 

 the census is susceptible, and much nearer than the results of 

 different counties agree with each other. The number of deaths 

 in a population of 1000 males and females, according to the 

 law of mortality of Table VII. is 271, making the ratio of the 



deaths to the population about — . Calculating the deaths be- 



tween and 5, to which period Mr. Finlaison's Observations do 

 not extend, from the same Table, and those at the succeeding 

 ages from Mr. Finlaison's Observations, 11 and 19, the total 

 number of deaths which results in a population of 1000 males 

 and females is 244, nearly ; and the ratio of the deaths to the 

 population about 1 to 41 : which is far greater than the ratio 

 given by Mr. Rickman. 



The following are some of the elements of the population 

 of England and France. Those for England are deduced from 

 the returns in the Population Abstract of 1821, before referred 

 to, and those for France from the Annuaire du Sureau des 

 Longitudes for 1829. 



Engtar.d. 



Fiance. 



Ratio of males to females 



male births to female 



deaths to female 



legitimate births to female.. . . 



illegitimate births to female. . . 



population to marriages in one year. 



births in one year... 



deaths in one year. . . . 



births to marriages 



' legitimate births to marriages 



increase of the population annually. 



