8 



202 



DRAINING, &c. 



Sect. XI. 3. 6^ 



applied, which was formerly ufed by Mr.Whitehurft of Derby on a. 

 imall fcale at Oultoii in Chefhire, as defcribed with a plate of the 

 machine, to which an air-veffel is ingenionfly added, in the Philofo- 

 phical Tranfaaions for the year i "i^S-^ ^oh LXV. p. 277, and which 



now adapted to varietj^ of 



machinery by M. Boult 



Efq. of Soho near Birmingham ; and is well explained with two 

 prints in the Repertory of Arts and Manufadures, No. LI. 



6. The following water machine, which is on the principle of 

 Hiero's fountain, is defigned to raife part of the water of a fpring, or 

 fmall brook, where fome feet of fall may be acquired,, to a greater 

 height for the purpofe of watering higher levels of ground ; and the 

 horizontal windmill with centrifugal pump is defigned for the fame 

 purpofe, where no fall can be acquired. We fhall then perhaps have 

 fatiated fome of our readers with this fubjed of watering lands, and 

 may conclude with the fliepherds in Virgil's Eclogue, 



r 



Claudite jam rivos, Pueri, fat prata biberunt. 



-V 



SECT 





> 



