A verbal argument between a 37-year-old man and a 40-year-old woman Wednesday has led to assault charges.  The two were arguing at about 10 p.m. and the man assaulted the woman with a plastic sandal.  The woman had a substantial injury to her head.  Police officers arrived just before 2:30 a.m. Thursday and arrested the man on a second-degree assault charge.  His bail was set at $11,000.