National Geographic : 1942 Mar
Wall Street of Agricultural America Is the Trading Floor of the ChicagoBoard ofTrade In the wheat pit every hand and finger movement has a meaning. Palm outward indicates selling; palm inward, anoffer tobuy. Each finger extended signifies an eighth of a cent a bushel. Lung power adds din. Sold here also are corn, oats, soybeans, rye, cotton, lard, and dry-salted hog bellies.