FREE STATES. Wheat 12 bushels per acre. Oats 27 " " Rye 18 " " Indian Corn 31 " " Irish Potatoes 125 " " SLAVE STATES. Wheat 9 bushels per acre. Oats 17 " " Rye 11 " " Indian Corn 20 " " Irish Potatoes 113 " " What an obvious contrast between the vigor of Liberty and the impotence of Slavery! What an unanswerable argument in favor of free labor! Add up the two columns of figures above, and what is the result? Two hundred and thirteen bushels as the products of five acres in the North, and only one hundred and seventy bushels as the products of five acres in the South. Look at each item separately, and you will find that the average crop per acre of every article enumerated is greater in the free States than it is in the slave States. Examine the table at large, and you will perceive that while Massachusetts produces sixteen bushels of wheat to the acre, Virginia produces only seven; that Pennsylvania produces fifteen and Georgia only five: that while Iowa produces thirty-six bushels of oats to the acre, Mississippi produces only twelve; that Rhode Island produces thirty, and North Carolina only ten: that while Ohio produces twenty-five bushels of rye to the acre, Kentucky produces only eleven; that Vermont produces twenty, and Tennessee only seven: that while Connecticut produces forty bushels of Indian corn to the acre, Texas produces only twenty; that New Jersey produces thirty-three, and South Carolina only eleven: that while New Hampshire produces two hundred and twenty bushels of Irish potatoes to the acre, Maryland produces only seventy-five; that Michigan produces one hundred and forty, and Alabama only sixty. Now for other beauties of slavery in another table. TABLE NO. XVIII. VALUE OF FARMS AND DOMESTIC ANIMALS IN THE FREE STATES--1850.