_Why the Produce due to Good Land prevents Prices from greatly Rising._--If the use of good wheat land were merely discontinued, the supply of wheat would of course be not only lessened, but reduced almost to nothing, and a famine price would at once result. If, now, an attempt were made to make good the shortage of the supply of this cereal by tilling lands which are now at the margin of cultivation, it would at once appear that not enough of such land exists to enable us to accomplish the purpose, and it would be necessary to push the margin outward and till poorer and poorer soils, at a greatly enlarging cost. We should grub out worse thickets, drain worse swamps, terrace more discouraging hillsides, irrigate more remote and barren deserts, etc. All this would mean a greater cost of production of wheat and a higher price for it in the market. It would also mean another thing. The extending of the margin of cultivation which makes it include poorer grades of land causes that part of the area now tilled which does not command any rent to yield one. After the margin should have been greatly extended and finally located in a region where getting anything out of the soil would require a struggle, it would appear that all of the lands newly annexed to the cultivated area except the last and poorest would command a rent. All but those on the new margin would add a definite quota to the supply of wheat, and this contribution would be their rent. Entering into the supply, it would of course count in the adjustment of price.