-27'^ 



DRAINING 



Sect. XL 2.2 



may then be conveyed 



ay 



bove the furfa 



wooden trough 



or holl 



brick 



s 



rafs, th 



fs 



nd iffome water ftill finds its way into the mo 



quantity may be condu«£led to one 



ity of th 



ground in open drains or covered Toughs, and raifed by an h 

 windmill and centrifugal pump, as defcribed at the end of this S 



I"' 



tion 



and th 



th 



|)rodu6tive kind 



morafs may be converted into foil of the mod 



2. There may be other fit 



the Peak of Derbyfh 



where pools of water, or morafles, are colleaed on the hollow fum 

 mits of hills ; which have been the craters of volcanoes in the prime 



ges of the world, as Elden-hole near Caflleton, which feems t 



have been the fhaft of fuch 



th 



fum mits of h 



In many of thefe bafon 



there ftill exift what are called " S 



or cavities ; where the water finks 



the earth 



It 



a 



pafs to fome diflant valley, as Elden-hole above mentioned, and 

 the channels of the rivers Hamps and Manifold, between 



to 



and Leek 



Aflibourn 



In others, as at the fummit of a fteep promontory called 



Axedge,nearBuxton,andaboutBroke-houfe,areunfathomedmorafres, 

 hiuh are faid in fome places not to bear a Oieep to pafs over them ,• 



s tenacious parts of them it is neceffary for the 

 adventurer to ftep from talTock to taffock, or to carry a lono- pole ho- 



d that on the moi 



lly in his hand, like thofe who fk 



pon fufpedled ice, to 



prevent his finking over head, if he fliould chance to fink 



It is probable, that by finking a well, or boring a hole, where 

 fuch moraffes or lakes now exift, into the obftruded (haft of the an- 

 -cient volcano, the water might be let ofF from thofe eminent mo- 

 raiTes at lefs expence, than by excavating a pafTage for it fome miles 

 in a country of marble. 



3. It is poffible there may be fituations in hioh countries of mar- 



bl 



the ground may b 



quartz, where the difficulty and expence of 



great, as above 



hich 



a 



flight be contrived for the purpofe of raifing the water from 



8 



fy ph 



ra 



fs 



