It is well known that a heavy body falling near the earth wull pass through a space of about fifteen feet in the first second of time ; if the same body was acted upon in a horizontal direction, by an impulse equal to its weight, it would move in that direction tlie same distance in an equal time; it follows, then, that the water in the trunk, will have the effect proportionable to its weight, of retarding the water from being discharged from the cylinder in too short a time.

Near the cylinder, on the top of the trunk, there is a valve to admit air, which follows the water that is then in motion, and gives time for the water to rise gradually into the trunk through valves, at its bottom, for that purpose ; this water has but little motion with respect to the boat and is therefore capable of resisting the next stroke of the engine.

Thus I have laid the principles of my boat before the public, and can assure them, by the wonderful force of steam, issuing in incredible quantities, from an entirely new constructed boiler, no doubt remains but all the advantages which I before mentioned, both with respect to navigation and the raising of water will be produced. The one I have effectually proved by a loaded boat being propelled against a stream, with the velocity of four miles an hour, in the presence and to the great satisfaction of numerous spectators, and the other by models now ready to be produced, which admit not of contradiction.