The First Steam-Boat

( 47 ) Watei' on each Side ot the Fans, and fo Contriv’d as they Ihall not touch them, which wU protecStthem from the Force of the Waves. Up in-land Rivers -where the Bottom on pofiible be reach'd, theTansmay be taken out, and Cranks placed at the hind- mod Axis to strike a Shaft to the Bottom of the River, which will årive the Ve£- lel forward "With the greater "Force. QuEty. 111. ft being a continual jE%, pence tolieep this Machine at Work, will the JtLvpencc he anfwered ? aAnjwer. The-work to be done by this Machine will beupon particular Occasions, when all other means yet found out are ■wholly Inlufiicient : Hoyv often does a Merchant with that his Ship were on the Ocean, when if he wei'e there., the Wind "Wou’d ferve tolerably well to carry him on his intended Voyage, but does not ■ferve at the fame time to carry him out o£ the River, &Pc. he happens to be in, which a f<Jw Hours work of this ^Machine wou’d do: Befides, I know Engines th at are driven by t]ie tame Power, as^his is, where materials for the PurpoCe aw dear- er than in any navig,aMeH.iver inlfngland- therefore Experience demonfhates, that the Expence w»H be but a Trifle to the value.