Mr Claxton afterwards begged the missionary to come and visit old Samson.  He gladly complied; but I heard him next day tell Uncle Stephen that he feared no impression had been made on the old trapper's heart. "Still, I do not despair," he added.  "It may be as hard as iron, or stone; but iron can be melted by the fire, and stone worn away by the constant dripping of water.  One thing I know,--that nothing is too difficult for God to accomplish; though we, his instruments, are obliged to confess our own weakness."