552 THE CENTURY, WITH NOTES. 



In the &quot; Life, Times, &c.,&quot; page 20, we have a view 

 of the deep grooves cut in that side of the Citadel of 

 Eaglan Castle, on which the Marquis of Worcester s 

 Water-works were situated. The grooves would admit 

 the insertion of pipes of about one foot external diameter, 

 either round, or square, and they would carry water 

 nearly twenty-five feet high. In the early use of his 

 engine, he may have forced the water direct from the 

 boiler, or by the using of an independent boiler, as em 

 ployed by Porta, in 1606; but either way, the arrange 

 ment of his Eaglan works would seem to have been that 

 of employing a main vertical pipe for each boiler or 

 receiver, instead of each receiver being connected with 

 a four-way cock with one vertical pipe, or u aquaduct.&quot; 



With these observations we close our comments on 

 the various articles of the &quot; Century, 7 after having sup 

 plied a mass of most important references to contempo 

 rary and earlier scientific authors; as well as offered 

 several entirely new solutions ; and reduced the proble 

 matical character of this singularly interesting work to 

 one only, being No. 56, which alone remains open to 

 the charge of being a paradox. 



the upper bend of each, it would be sufficient for a single pipe to dip into the water 

 to be raised. 



On the steam pipe B B is 



b, a four-way steam cock, operated by 



b , its lever handle ; and on the horizontal portion of the water pipe F F , is 



c, a four-way water cock, operated by 

 c , its lever handle. 



%*The four-way cock is figured and described as early as 1618, by Robert Fludd* 

 in &quot;Historia Macrosmi,&quot; folio, page 467. 



