This is a short book that was originally called forth by a double anniversary, the centennial of the Fulton steamboat and the three hundredth anniversary of Hudson's great discovery. The author has had the benet of a long experience with the places which he describes, and his family has enjoyed unusual advantages through personal acquaintance with many of the river captains. After describing Fulton and his great invention, the author passes on to the development of the river navigation. He recounts the gradual evolution from the primitive crafts of the early nineteenth century to the palatial steamers of the present. He gives miscellaneous data relating to the monopoly of trafc, to disasters of historic importance; he includes a few anecdotes, and concludes his text with a brief narrative of Hudson's voyage and the projected memorials.