DTN Closing Livestock Comment 07/20 15:55 Back and Forth Cattle Futures This Time Break Sharply Lower Cattle futures answered triple-digit gains at midweek with triple-digit losses today. Lean hog contracts settled on a mixed basis with nearby issues losing a significant amount of ground to deferreds. By John Harrington DTN Livestock Analyst GENERAL COMMENTS The cash cattle trade remained very slow with just a handful of dressed deals reported in parts of the North at $188 (steady with Wednesday, but $2 lower than last week). According to the closing report, the national hog base is $0.51 lower ($79.00-85.50, weighted average $84.28). Corn futures closed nearly 8 cents higher, sparked by extreme heat and growing crop concerns. The stock market closed mixed with the Dow off 28 points and the Nasdaq up 4.