224 LIFE, TIMES, AND SCIENTIFIC LABOURS [1660. 



thence, I beseech you to vouchsafe to read over, but to 

 keep it to yourself, this enclosed, which shall be made 

 good to a tittle by me, 

 &quot; My Lord, 

 &quot; Your Lordship s most really affectionate 



u and ever obliged servant, 



&quot; WORCESTER. 



&quot; Saturday night, 26th of January, 1660, 

 &quot; be therefore pleased to pardon the scribbling, 



&quot; and regard but my real meaning. 

 &quot; For the RIGHT HON. THE EARL OF LOTHERDALE, &c. these.&quot; 



(Copy of the enclosure: ) 



&quot; The name and the truly significant definition of a 

 most admirable and most stupendous invention, through 

 the providential dispensation of the Almighty God s 

 infinite mercy and goodness, found out, and perfected 

 by the sole expenses, ingenuity, knowledge, and mathe 

 matical insight of the Right Hon. Edward Somerset, 

 Marquis of Worcester, and by his Lordship deservedly 

 termed, and pithily defined to be 



&quot; An Imperial, or a Water-commanding Engine, 

 boundless for height and quantity, and requiring no 

 external, nor even additional help, or force to be set, 

 or continued in motion, but what intrinsically is 

 afforded from its own operation, nor yet the twentieth 

 part thereof, and the engine eonsisteth of these following 

 particulars : 



&quot; 1. A perfect counterpoise for what quantity of water 

 soever. 



&quot; 2. A perfect countervail for what height soever it 

 is to be brought unto. 



&quot; 3. A primum mobile, commanding both height and 

 quantity, regulator- wise. 



U 4. A vice-gerent, or countervail, supplying the 

 place, and performing the full force of man, wind, beast, 

 or mill. 



