406 THE CENTURY, 



room in any Ship, where few hands 

 {hall do the work of many; and 

 many hands applicable to the fame 

 force, fome ftanding, others fitting, 

 and 9 by virtue of their feveral helps 

 a great force augmented in little 

 room, as effectual as if there were 

 fufficient fpace to go about with an 

 Axle-tree, and work far from the 

 Centre. 



9 and yet. 



[Multiplied strength in little room. ] We shall have to 

 allude to the ambiguous use of the word u force&quot; in 

 the same sentence, as indicating &quot; strength, power, &c.&quot; 

 or, &quot; a pump, or pump plunger,&quot; in John Bate s, and 

 other old works on mechanics. Now if we were to 

 read this, &quot; How to bring the force [or plunger of a 

 pump] to weigh up an anchor, &c., and many hands 

 applicable to the same force [or pump], &c.&quot; we 

 should have a statement strongly indicating the modern 

 contrivance of the hydraulic press. The concluding 

 portion of the sentence only serves to strengthen this 

 suggestion. See &quot; force&quot; used in No. 21. 



In 1594, Edmund Jentill, writing to Lord Burghley, 

 mentions, as his fourth invention : &quot; A devise whereby 

 two men may be sufficient to weigh the weightiest 

 anchor in her Majesty s navy, with greater expedition 

 than it is now done with the number now used.&quot; Also, 

 &quot; The like device is found for the hoisting of the main- 

 yard with the like expedition.&quot; MS. Lansdown, 113, 

 Art. 4: and, &quot; Letters on Scientific Subjects,&quot; edited by 

 J. 0. Halliwell, F.E.S. 8vo. 1841. 



