A short treatise on the application of steam : whereby is clearly shewn, from actual experiments that steam may be applied to propel boats or vessels of any burthen against rapid currents with great velocity. Great velocity. [sic] : The same principles are also introduced with effect, by a machine of a simple and chep [sic] construction, for the purpose of raising water sufficient for the working of grist-mills, saw-mills, &c. and for watering meadows and other purposes of agriculture. / By James Rumsey, of Berkeley County, Virigina.