WITH NOTES. 



427 



2 7 . 



A way to remove to and fro huge 

 weights with a moft inconfiderable 

 ftrength from place to place. For 

 example, Ten Tunne with ten 

 pounds, and lefs ; the faid ten pounds 

 not to fall lower then it makes the 

 ten Tunne to advance or retreat 

 upon a Level. 



[A most easie level DraugJit.~\ The weight is in this 

 case to be moved &quot; with a most inconsiderable strength.&quot; 

 Ten pounds, or less, are to be capable of moving 

 22,400 pounds. And the precise conditions are &quot; the 

 said ten pounds not to fall lower than it makes the ten 

 ton to advance&quot; The annexed engraving shows, as in 

 No. 25, two cylinders B, C, with their steam-pipe and 



