12 Mr. Worcester on Longevity, 
f 
following reasons :—Ist. The population of New Hampshire is 
almost wholly engaged in agriculture, whereas in Wales the 
number of inhabitants employed in agriculture, is to that employed 
in trade and manufactures, only about as 5 to 3. 2dly. A much 
greater proportion of the population of the latter country reside 
in towns and villages, than in the former. 3dly. Luxury, on the 
one hand, and extreme poverty on the other, are much less com- 
mon in New Hampshire than in Wales. 4Athly. In New Hamp- 
shire the poorer class of people are not only much better provided 
with the necessaries and comforts of life, but are also better edu- 
cated and are of better morals, than the same class in Wales. For 
these reasons, it is believed, if the above statement of the law of 
mortality in Wales is correct, that respecting New Hampshire 
cannot deviate very widely from the truth. 
On the supposition that the ratio of mortality in New Hamp- 
shire is as 1 to 80, the average annual number of deaths during 
16 years, from 1808 to 1823 inclusive, by taking the mean of 
the two enumerations of 1810 and 1820, will be found to have 
been 2,866: total number of deaths during the 16 years, 45,856. 
Of these, 59 at least, as appears by the above list, were of per- 
sons of the age of 100 years or upwards ;—equal to 1 in 789. 
In 1784, an order was issued by Kian Long, emperor of China, 
for assembling before him all the old men in his empire; yet 
throughout his extensive dominions, and out of a population 
estimated at about 200,000,000, four persons only could be found 
who were over 100 years of age. In Sweden, which is esteemed 
a healthy country, there were, according to the enumeration of 
1815, in a population of 2,465,066, only 9 persons of 100 years 
of age, equal to 1 in about 270,000. In England, in 1821, ina 
population of 9,850,461, there were 168 centenarians ; equal to 
