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48. Amongft the Wdter -works of Pleafure, we muft not forget 

 an Engine contrived by the Right Reverend Father in God* John 

 Wilkins, Jate Lord Bilhop of Chefier, when he was Warden of 

 Wadham College, though long fince taken thence ; whereby, of but 

 few gallons of water forced through a narrow Figure, he could 

 raife a mift in his Garden, wherein a perfon placed at a due di- 

 ftance between the Sun and the mijl } might fee an exquifite Rdin^ 

 love in all its proper colours i which diftance I conceive was the 

 fame with that afligned by Des Cartes, vi^, where the Eye of the 

 Beholder is placed in an angle of 4Z degrees, made by the decuffa- 

 ticn of the line of Vifion, and the rays of the Sun ; and the Fifure 

 fuch another as in his Diagram h . But what kind of Instrument it 

 was that forced the water, I dare not venture to relate, the defcri- 

 ption given me of it being but lame and imperfect. 



49. Nor can Ipafs by unmentioned, a Clock that I met with 

 at Hanwell, at the Houfe of the Right worftiipful Sir Anthony 

 Cope, that moves by water, and (hews the hours, by the rife of a 

 new guilded Sun for every hour, moving in a fmall Hemisphere of 

 wood, each carrying in their Centers the number of fome hour 

 depi&ed black. ; as fuppofe of one a clock, which afcending half 

 way to the Zenith of the arch, fhews it a quarter paft one, at the 

 Zenitbhzlf hour; whence descending again halfway towards 

 the Horizon, three quarters paft one ; and at laft abfconding under 

 i:, chere prefently arifes another guilded Sun above the #ori^)tf at 

 the other fide of the arch, carrying in its center the figure two : 

 andfo of the reft. Which ingenious device, though taken out 

 of Bettinus l , who calls it, aquarii Automates ingenioftffimi horari- 

 am operationem : yet being fince improved by that ingenious Per/on^ 

 and applyed to other ufes, particularly of a Pfeudo-perpetual mo- 

 tion made by the defcent of feveral guilt bullets upon an indented 

 declivity, fucceffively delivered by a wheel much of the fame fa- 

 brick with the Tympanum of the Water-clock-, fo that they feem ftill 

 the fame : I could not but in juftice take notice of it* 



50. There are fome other Water-works at the fame Sir Anthony 

 Copes, in a Houfe of diver fion built in a fmall l/land in one of the 

 Fijh-ponds, Eaft ward of his houfe, where a ball is toft by a column 

 of water, and artificialj^Wm defcend at pleafure ; within which 

 they can yet fo place a candle,thzt though one would think it muft 



* Dei Cartes Meteoror.caf.%. ' Marti Bettim JErariiThilofoph.Mathemat.Tam-zExodw^. &ult. 



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