We here left our valued friend Mr. Tyson, who after calling on us at the hotel in the evening, was to return at ten o'clock to Baltimore. We certainly never enjoyed a journey more. He is the most entertaining man you can imagine, full of anecdotes and good stories; and, as we have said before, with such a marvellous memory, that he could repeat whole passages of poetry by heart. His knowledge too of botany was delightful, for there was not a plant or weed we passed of which he could not only tell the botanical and common name, but its history and use. He has travelled much, having been employed in mining business in the Brazils. He has also been in the West Indies, in England, Scotland, and Ireland, and on the Continent of Europe. We had a pleasing variety in occasional visitors to the car; for not only the work-people on the road, as I have said, got up behind to speak to Mr. Tyson, and were always received by him in the most friendly manner, being men of high calibre in point of intelligence, but we had at different times a Dr. Orr, a physician and director of the railway, who was on the engine with us to set our bones, if papa had capsized us and the doctor had escaped; also a Dr. Gerbard, a German surgeon, with a scar on his cheek from a duel at college in his youth. Dr. Orr was accompanied by a lady, with whom I conversed a good deal, and found she was the owner of many slaves; but I must write you a chapter on slavery another time. All the last day of our journey from Grafton to Wheeling, was through Virginia, and the rural population were chiefly slaves. The two doctors I have mentioned were our visitors yesterday. To-day, we had throughout with us Mr. Rennie (Mr. Tyson's assistant), and also Major Barry, an agent of the Company, and an officer in the United States service, who in the last Indian war captured with his own hand, Black Hawk, the great Indian Chief, in Illinois. He is an Irishman by birth, and had been in our service at the battle of Waterloo, but he left the British army, and entered the United States service in 1818. He was very intelligent and agreeable. Our last visitor was Colonel Moore, also an agent of the company; a most gentleman-like man. This will show you what a superior set of men are employed on American railways.