sentences:  Over the next three years, the number of detainees from the mainland rose to 320 and together they transformed the island into an attractive settlement, albeit one for criminals still.Dutton believed that the detainees under his charge were not entirely cruel and evil and could be rehabilitated, thus leading to his rather lenient attitudes.However, despite such an outlook, he was also a strict enforcer of discipline and would not hesitate to punish those detainees who dared to challenge or defy his orders or the prison's regulations, as well as those recalcitrant prisoners who continuously broke the law.