U is therefore hereby enacted^ by the and by the authority of the same, that from and after the passing of this act, the said James Rumsey his executors, administrators and assigns, shall have the sole and exclusive right, liberty and privilege within the state, of making, using and vending to others, the saul Boiler for generating steam, so as aforesaid described, and called Rumsey's Pipe Boiler ; the said Steam Boat to be propelled through the water, by means of the re-action of a stream of water forced by steam through a trunk or cylinder from the stern of the boat, against the surrounding water, so as aforesaid described, and called Rumsey's Steam Boat ; the said improvement of Savery's Engine, for raising water for the turning of mills, or for agricultural or other purposes so as aforesaid described, and called Rumsey's improvement upon Savery's machine, or Steam Engine ; the said mode for turning mill stones, and other machinery requiring a circular or retrograde motion, called Rumsey's improvement upon Doctor Barker's mill, and the said mode of working saw-mills, and other machines requiring an alternately opposite motion, perpendicular or horizontal, called Rumsey's Saw Mill ; all which engines, machines and devices, are more particularly defined and described in the said plans, and explanations so as aforesaid filed of record in the office of and to which definitions and descriptions, for farther certainty, this act particularly refers.

NAVIGATION. 1101

^nd it is hereby further enacted by the authority aforesaid, that no person or persons whomsoever, shall make, use, or vend to others to be ueed, any or either of the inventions or improvements so as aforesaid described or defined in this act, or in the plans or explanations filed of record in the said office, and hereby referred unto ; or any engine, machine or device whatsoever, formed or contrived upon the same principles therewith, although the form thereof may be varied, under the penalty of forfeiting to the said James Rumsey, his executors, administrators or assigns, the sam of lawful money of this state ; and ihorcover forfeiting