FILTRATING WELL FOR RAIN-WATER. 358 



IX. 



Account of a Well for preserving and filtering Rain-water 

 for domestic Purposes, where a Supply of Spring-wate-r 

 was not easily to be obtained. Communicated by J. R. 

 Go wen, Esq. 



To Mr. NICHOLSON, 

 SIR, 



Y OU may perhaps deem the following account of a fil- Well for nltra. 

 lering rain-water well, which has been successfully tried tmgrainw * ter * 

 here by the Earl of Caernarvon, not undeserving of notice 

 in your valuable Journal. His lordship has lately erected, 

 upon a dry gravelly eminence in his park, an ornamental 

 circular building, consisting of a room and open colon- 

 nades above, and apartments for cottagers upon the base- 

 ment floor. Considerable .discussion arose upon the mode Difficulty of 

 of supplying them with water, from the great depth to t" r P on m? emi- 

 which it was necessary to sink, in order to obtain an dice- acnce* 

 tive well. My friend, Mr. John Loat, builder, of Clap- 

 ham, who had furnished the plan for the construction of 

 the dome roof, mentioned to me a contrivance of his fa- 

 ther's to meet a similar difficulty, which had been attended 

 with invariable success, and Lord Caernarvon immediately 

 determined upon carrying it into execution. 



Following Mr. Loafs instructions, we sunk two wells, obviated by 



SO feet deep by 4 feet diameter each, which for greater co 11 ^"? «"*• 



r J 7 ° water m one 



perspicuity I shall call No. 1 and 2. i hey are a trifling well and filtra- 



distance asunder, and were carefully clayed, to prevent per- tl "» lt mt0 an " 



eolation into the surrounding soil, and lined with bricks in 



the usual manner. A well secured communication was 



made between the two wells, by a small leaden pipe inserted 



two feet from the bottom. All the pipes from the roof were 



directed into No. 1 ; and an oak floor, bored full of small 



holes, and supported upon posts, was laid in at No. 2, 



just above the pipe of communication. Upon this floor 



was first placed a stratum of well washed coarse gravel, 



then one of liner, next a stratum of coarse sand, and finally 



Vol. XXII. — Supplement. 2 A on* 



