It became Marshall's duty, in the course of twenty-five years, to try for high treason the man who killed his friend Hamilton, but he conducted that trial with such an absence of personal feeling that it was among the greatest marvels of our legal history. He could neither be influenced by his private grief for Hamilton, nor by Jefferson's attempts as President to injure Burr, nor by Burr himself, whom he charged the jury to acquit, but whom he held under bond on another charge, to Burr's rage. Marshall was in the battle of Monmouth, and at the storming of Stony Point, and at the surprise of Jersey City. In the army camps, he became acquainted with the Northern men, and so far from comparing invidiously with them, he recognized them all as fellow-countrymen and brave men, and never in his life was there a single trace of sectionalism. HIS MARRIAGE. Near the close of the Revolution, Marshall went to Yorktown, somewhat before Cornwallis occupied it, to pay a visit, and there he saw Mary Ambler at the age of fourteen. She became his wife in 1783. Her father was Jacqueline Ambler, the treasurer of the State of Virginia. She lived with him forty-eight years, and died in December, 1831. He often remarked in subsequent life that the race of lovers had changed. Said he: "When I married my wife, all I had left after paying the minister his fee was a guinea, and I thought I was rich." General Burgoyne, whom Marshall's fellow-soldiers so humiliated, wrote some verses, and among these were the following, which Marshall said over to himself often when thinking of his wife: "Encompassed in an angel's frame, An angel's virtues lay; Too soon did heaven assert its claim And take its own away. My Mary's worth, my Mary's charms, Can never more return. What now shall fill these widowed arms? Ah, me! my Mary's urn." LAW LECTURES.