The proportion which their present numbers bear to the numbers of the rural population does not exceed one to six, whereas the urban population of the Atlantic border is not less than one to three of the rural. This disproportion of city and rural population will hereafter change more rapidly in favor of the interior than the Atlantic cities, because of the greater fertility of soil producing more food from an equal amount of labor; and also, by reason of the more rapid growth of the general population, of which an increasing proportion will prefer city to country life. Will it not be so? Will not the general increase of population be greater in the interior States? Will not the productions of the soil increase faster? And can there be a doubt that the large disproportion in the distribution of the population between city and country, in the interior, will be lessened, so that, instead of being, as now, only one to five or six, they will rapidly approach the proportion of one to two or three? Here, then, are the sources of superior increase so obviously true, as to need only to be stated to insure conviction.

Let us now compare the growth, for the thirty years since 1830, of the five largest Atlantic cities, with the five largest cities of the plain, and, by its side, extend the comparison to 10, 15, and 20 of the largest city of each section:

1830. 1860 Est.
New York and accessories235,000 1,170,000
Philadelphia"170,000 700,000
Baltimore"83,000 250,000
Charleston"31,000 60,000
599,000 2,380,000
Increase 4 times.
1830. 1860 Est.
Cincinnati and suburbs28,000 250,000
New Orleans"47,000 270,000
St. Louis"6,000 170,000
Chicago"100 150,000
Pittsburg"17,000 145,000
98,000 2,885,000
Increase 9 times.

Let us now compare the ten largest of each section.

Atlantic.
1830. 1860 Est.
The aggregate of the five largest as above579,000 2,370,000
Providence17,000 55,000
Lowell6,500 40,000
Washington19,000 60,000
Albany24,000 65,000
Richmond16,000 35,000
——— ———
661,000 2,625,000
Increase 4 times.
Interior.
1830. 1860 Est.
Aggregate as above98,000 885,000
Buffalo9,000 100,000
Louisville10,500 80,000
Milwaukee50 75,000
Detroit2,000 80,000
Cleveland1,000 70,000
——— ———
120,550 1,290,000
Increase 10 7-10.

Aggregate of the ten, with five more of each section added, added, to wit:

1830. 1860 Est.
Aggregate as above661,000 2,625,000
Troy11,500 35,000
Portland12,500 30,000
Salem14,000 25,000
New Haven10,000 30,000
Savannah7,500 15,500
——— ———
716,500 2,760,500
Increase 3 8-10 times.
1830. 1860 Est.
Aggregate as above120,550 1,290,000
Toronto1,700 65,000
Rochester9,000 50,000
Mobile3,000 30,000
Memphis1,500 25,000
Hamilton1,500 25,000
——— ———
137,000 1,485,000
Increase 16 7-10 times.

Aggregate of the fifteen, with five more added in each section:

1830. 1860 Est.
Aggregate as above716,500 2,760,500
Springfield, Mass7,000 24,000
Worcester,"4,500 24,000
Bangor, Me.3,000 23,000
Patterson, N. J.5,000 22,000
Manchester, N. H.50 22,000
——— ———
736,500 2,875,500
Increase 3 8-10 times.
1830. 1860 Est.
Aggregate as above137,250 1,485,000
Dayton3,000 24,000
Indianapolis1,500 22,000
Toledo30 20,000
Oswego3,200 20,000
Quincy1,500 20,000
——— ———
149,700 1,591,000
Increase 10 6-10 times.

From the above tables, we see that the city of New York, with its neighboring dependencies, will have made in growth in thirty years, between 1830 and 1860, increasing its population 5 times. During the same period,