Today was the third day of corn contracts slowly working higher in narrow daily trading ranges as positions are adjusted, and the December contract still does not appear expensive with today's close at $3.69/bushel. General Comments The composite of corn, soy complex and wheat started off at higher levels, but the latter two drifted lower as the day progressed. Such movement within narrow trading ranges implied that trading positions are being adjusted in case of potential volatility once USDA's global estimates are updated this Friday. The prospect of a large U.S. soybean crop being followed by a big South American crop may make some U.S. crushers nervous about present price levels of oil and meal. However, such concern may be premature...