“The two predominant powers which reign over my soul, and do chiefly guide and govern my actions, are love and gratitude; the one begotten in me towards your Lordship by the knowledge I had in the Tower of the virtues and excellent parts, the other by a certain and most true information of some passages vouchsafed by your Lordship in your servant’s behalf, and even in his absence yesterday, before his Majesty at Hampton Court. The particulars I set not down, because (?) they seemed so obliging to me as that Colonel Charles Groger, telling them me but at nine of the clock this night, yet I could not defer till morning this most humble acknowledgment; but before I go to rest, as a little token of great thankfulness, I promise your Lordship a box, with such conveniences and rarities as that which you saw had, and though it were presumptuous in me to say, I would give a subject a better qualified present than I gave my Sovereign; yet the King must pardon an humour I have, never to be contented to produce any invention the second time without appearing refined; this doth not also content me, but I do likewise engage myself that as soon as with security and satisfaction, by Act of Parliament, I may put in practice the greatest gift of invention for profit that I ever yet heard of vouchsafed to a man, especially so unworthy and ignorant as I am (I mean my water-commanding engine). I offer to your Lordship’s disposal the accruing benefit of five hundred pounds; and that your Lordship may not think it improbable to rise 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, “My Lord, “Your Lordship’s most really affectionate “and ever obliged servant, “WORCESTER. “Saturday night, 26th of January, 1660, be therefore pleased to pardon the scribbling, and regard but my real meaning. For the RIGHT HON. THE EARL OF LOTHERDALE, &c. these.” (_Copy of the enclosure._) “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 mathematical insight of the Right Hon. Edward Somerset, Marquis of Worcester, and by his Lordship deservedly termed, and pithily defined to be-- “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 consisteth of these following particulars:-- “1. A perfect counterpoise for what quantity of water soever. “2. A perfect countervail for what height soever it is to be brought unto. “3. A primum mobile, commanding both height and quantity, regulator-wise.