Always collecting examples of "secret signatures" that predate all the stuff we do, I offer this for your amusement/pleasure. --dan ============================================================== "Marion Dorset," Progressive Farmer, November 1999, p31. His solution to hog cholera saved producers millions ... Besides contributing to the hog cholera vaccine, Dorset also invented the purple ink stamp that identifies USDA-inspected meat -- an ink that's used to this day. USDA won't reveal what's in Dorset's formula. It is kept secret to avoid replication of the stamp. ==============================================================
