The governor of Virginia made a requisition upon him for the surrender of certain parties accused of assisting slaves to escape from their owners. He refused to comply with the demand, upon the ground that the article in the Constitution authorizing a demand of fugitives from justice covered only such persons as were criminals by the laws of the several States and the civilized world. Aiding a slave to escape from his master, in his opinion, was no crime, and he did not feel it to be his duty to surrender the accused. A long controversy was the result of this bold decision, and retaliatory measures were tried by the State of Virginia, but Governor Seward remained firm to the end. In 1847, Mr. Seward defended John Van Zandt, who was accused of aiding the escape of slaves from their master, at the bar of the Supreme Court of the United States. It was one of the most eloquent arguments he ever made, and he would not accept of a dollar's compensation for his great effort. While riding once upon the banks of the beautiful Owasco Lake, the friend who was with us, pointed out a pleasant farmhouse as the scene, a few years before, of a terrible murder, and not far distant, in a lonely churchyard, we saw the graves of the victims. A negro of the name of William Freeman, at the age of sixteen, was sent to the State Prison for five years, for alleged horse-stealing. He declared his innocence of the charge, and it has since been admitted by those who tried him, that he was doubtless an innocent man; but, through the false swearing of the real thief, he was sent to prison. The injustice of his punishment, coupled with barbarous treatment while in prison, resulted in an idiotic insanity, and when, at last, he was set free, his term of imprisonment having expired, he went forth an idiot--a lunatic--with but one idea in his brain--that the outside world had most foully wronged him.