WITH NOTES. 407 



J 5- 



A way 1 how to make a Boat 

 work it felf againft Wind and Tide, 

 yea both without the help of man 

 or beaft ; yet 2 fo that the Wind or 

 Tide, though direlly oppofite, fhall 

 force the Ship or Boat againft it felf; 

 and in no point of the Compafs, but 

 it fhall be as effectual, as if the wind 

 were in the Pupp, 3 or the ftream 

 actually with the courfe it is to 

 fleer, according to which the Oars 

 shall row, and neceflary motions 

 work and move towards the defired 

 Port or point of the Compafs. 



1 A way omitted. 3 but for yet. 3 poop. P. 



[_A Boat driving against wind and tide.~\ The word 

 ing of tliis article is varied as follows in the MS. of 

 certain of his Inventions. See Appendix A. He 

 therein states : 



&quot; By this (his quintessence of motion), I can make a 

 vessel, of as great burden as the river can bear, to go 

 against the stream ; which, the more rapid it is, the 

 faster it shall advance. And the moveable part that 

 works it, may be, by one man, still guided, to take the 

 best advantage of the stream ; and yet to steer the boat 

 to any point. And this engine is applicable to any 

 vessel or boat, whatsoever, without being, therefore, 

 made on purpose ; and work these effects : It roweth ; 

 it draweth ; it driveth, if need be, to pass London bridge 

 against the stream, at low water. And a boat lying 



