38 Mr. Worcester on Longevity. 
is augmenting in population much more rapidly than Connecticut, 
by natural increase, as well as by accessions from the other 
states. Of the states enumerated in the above tables, In- 
diana and Ohio have the greatest proportion of their inhabitants 
under the age of 10 years, and the smallest over the age of 45; 
and these are the two states which increased in population, from 
1810 to 1820, much faster than the others,—the former at the 
rate of 152 per cent., the latter at the rate of 500 per cent. 
' The rates of increase from 1810 to 1820, in Maine and New 
Hampshire, are 30.4 per cent. and 13.8. The mean of these, 
22.1, differs but little from the rate of increase in South Carolina, 
which is 21.1. In South Carolina, according to the above table, 
only 11. in 100 of the inhabitants are of the age of 45 and up- 
wards; while in Maine and New Hampshire, taking the mean, 
14—. in 100 have reached this age. In South Carolina, likewise, 
more than half of the inhabitants are under the age of 16 years ; 
while a large majority in Maine and New Hampshire are above 
this age. ‘These differences may be ascribed chiefly to the cir- 
cumstance that the probability of life is greater in the New Eng- 
land states, than it is in the Southern. 
In agreement with these observations, it will be found that in 
European countries, where the increase of population is very 
moderate ; in other words, where the deaths are nearly equal to 
the births, the number of inhabitants in the earlier years of life, 
bears a much smaller proportion to those more advanced, than in 
the United States. . These differences, in some instances, it will 
be seen, are very remarkable. ‘ 
In France the proportion of the population under 10 years, is 
estimated at but a little more than +: under 20, a little more than 
+. In Naples, according to the census of 1818, ina population of 
