___----------the Era ofFarm Products Is OverFacts Art Not That Crop Prices Have Been Adequate and Have Now Become Exorbitant, But That a Number of Causes Have Heretofore Forced Prices Disastrously Low and Permanently Enhanced Prices May Now Be Looked for.(Reprinted from tho American Review of Reviews, August, 1918).BY CLARENCE POE.£' .(Editor' of The progressive Farmer; author of “Ho.w Formers Co-operate . and Double Profits, etfl.)iC-’; The food problem, Is serious now during:'war times, but It must not bo 'forgotten that it was becoming serious before war began. Moreover. It will be serious aftor the war is over.how much corn or cotton the farther with a family of five finds it physically possible to produce, and hence what is the- total profit por family under the most favorable of tho widely varying conditions. , Widely varying conditions, I say, because while our manufacturers of any line of goods have rather uniform machines and expect a rather uniform product-per worker, an industrious farmer may got 100 bushels of com por acre from his rich Iowa soil, only 10 bushels from a Vet*-It Us highly important, therefore. (mont rock-rldge, and find total- fall-for the nation to get a clear under- urc in a d routh-cursed r, atea In Kan-standing of the agricultural situation, sas; just k* two-bale-per-acre land In