Grain and soy futures prices have been relatively quiet and range-bound lately with the exception of soyoil. Soyoil futures were trading slightly lower yesterday, but this follows six straight higher closes in pursuit of palm oil amid the buoyant outlook for edible oil. The spot August soyoil contract added about 200 points during this rally.   Traders usually look for an early to mid-summer seasonal rally in the corn market in response to some sort of crop scare, but we fear that rather quietly and quickly, this seasonal rally has come and gone.  December Corn hit its recent low of $3.235 on 29 June, and it hit a high of $3.63 on 2 July, a swing of almost $0.40 in just three trading days. That is a pretty high level of acti...