A St. Lawrence County man has been arrested on a charge of assaulting a child. Twenty six year old Patrick Barber of Hermon is accused of striking a two year old on the behind so hard, that it caused bruising. Police say the child belongs to Barber’s girlfriend. He is charged with second degree assault and endangering the welfare of a child. Following arraignment, Barber was ordered held in the St. Lawrence County Jail on $3000 cash bail.