Illinois is increasing in a _progressive_ ratio as compared with Missouri. Thus, from 1840 to 1850 the increase of numbers in Illinois was 78.81, and from 1850 to 1860, 101.01 per cent., while the increase of Missouri from 1840 to 1850 was 77.75, and from 1850 to 1860, 73.30. Thus, the ratio is augmenting in Illinois, and decreasing in Missouri. If Illinois and Missouri should each increase from 1860 to 1870, in the same ratio as from 1850 to 1860, Illinois would then number 3,441,448, and Missouri, 2,048,426. (Table 1.) In 1850, Chicago numbered 29,963, and in 1860, 109,260. St. Louis, 77,860 in 1850, and 160,773 in 1860. (Table 40.) From 1840 to 1850 the ratio of increase of Chicago was 570.31, and from 1850 to 1860, 264.65, and of St. Louis, from 1840 to 1850, 372.26 per cent., and from 1850 to 1860, 106.49. If both increased in their respective ratios from 1860 to 1870 as from 1850 to 1860, Chicago would number 398,420 in 1870, and St. Louis, 331,879. It would be difficult to say which city has the greatest natural advantages, and yet when St. Louis was a city, Chicago was but the site of a fort. PROGRESS OF WEALTH.--By Census Table 36, the cash value of the farms of Illinois in 1860, was $432,531,072, and of Missouri, $230,632,126, making a difference in favor of Illinois of $201,898,946, which is the loss which Missouri has sustained by slavery in the single item of the value of her farm lands. Abolish slavery there, and the value of the farm lands of Missouri would soon equal those of Illinois, and augment the wealth of the farmers of Missouri over two hundred millions of dollars. But these farm lands of Missouri embrace only 19,984,809 acres (Table 36), leaving unoccupied 23,138,391 acres. The difference between the value of the unoccupied lands of Missouri and Illinois, is six dollars per acre, at which rate the increased value of the unoccupied lands of Missouri, in the absence of slavery, is $148,830,346. Thus it appears, that the loss to Missouri in the value of her lands, caused by slavery, is $340,729,292. If we add to this the diminished value of town and city property in Missouri, from the same cause, the total loss in that State in the value of real estate, exceeds $400,000,000, which is nearly twenty times the value of her slaves. By Table 35, the increase in the value of the real and personal property of Illinois from 1850 to 1860, was $715,595,276, being 457.93 per cent., and of Missouri, $363,966,691, being 265.18 per cent. At the same rate of increase from 1860 to 1870, the total wealth of Illinois would then be $3,993,000,000, and of Missouri, $1,329,000,000, making the difference against Missouri, in 1870, caused by slavery, $2,664,000,000, which is more than double the whole debt of the nation, and more than twice the value of all the slaves in the Union.