Mr Harley on the Population of North America. 329 
other; but in the census for 1820, the district of Maine will be 
found to have gained a positive superiority in every age ; — all 
the increments, and particularly those of the female class, being 
considerably raised above those of Vermont. In the latter state, 
indeed, we find the change to have been so remarkable, as to 
create decrements in its youngest class of males and females. 
Connecticut, likewise, is distinguished by decrements in its 
youngest classes ; but the transitions are much less remarkable : 
for, in the former decade, the youngest class of males belonging 
to this state, was distinguished by a feeble diminution of its 
numbers ; and the females of the corresponding class approach- 
ed very nearly to a stationary state. But in Vermont, the change 
has been from increments of considerable and nearly equal mag- 
nitude, to decrements of a less equal kind. The second class of 
males and females has also undergone variations of a remarkable 
kind. The greatest increments which the population of this 
state received from 1810 to 1820, are in the three last classes of 
each of its sexes. 
If we contrast the present Table for New Hampshire, with 
the results of the former decade, the increments will be found 
to possess some curious relations. The first, second, and fourth 
classes of its males, and also the first, second, third and fourth 
classes of its females, for the last ten years, have increments in- 
ferior to the corresponding rates of increase of the former de- 
cade ; but the increments of the classes of the two sexes for the 
latter period, exceed the corresponding ones of the former. In 
Massachusets, with the exception of the last class, the increments 
alternate with the corresponding increments of the former pe- 
riod, from less to greater, and from greater to less. The first 
and second classes of males in Rhode Island, exhibit also a re- 
lation of this kind ; and so also do the three last classes of fe- 
males. The alternating changes which exist in the increments 
of Massachusets, are not, however, to be traced in the fine pro- 
vince of New York, all the augmentations which its different 
ages have received, being inferior, in point of magnitude, to the 
corresponding increments of the preceding period. There is, 
however, a greater degree of uniformity, and a closer connec- 
tion, among the increments of this province, than in many others. 
In New Jersey, the increments for the first class of each sex 
