A heated dispute over the relative merits of Harvard and Yale erupted into fisticuffs Monday, when Yalie William Vanderploeg, 20, struck Randolph Stephenson, a strapping Harvard lad of 19, about the face and neck in a most brutish manner. 'The vainglorious braggart dared suggest that his Crimson squad could out-row us nine times of ten,' said Vanderploeg, captain of the Yale crew team. 'I knew they raised them as barbarians over Harvard way, but the very gall.' Stephenson, his hair mussed from the attack, vowed that the dispute is far from settled. 