This table shows the five Atlantic cities to have quadrupled, and the five cities of the interior plain have increased nine times. Is this relative rate of increase of the exterior and interior cities to be changed, and, if it is to be changed, when is the change to commence? We can foresee no cause adequate to that effect, or tending toward it. On the contrary, it seems to us certain as any future event, that the rate of growth of the interior cities, compared with those on the Atlantic border, will be increased. 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 accessories 235,000 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 suburbs 28,000 250,000 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.