7. YORKSHIRE. 167 



this would be counterbalanced by the advan- 

 tage aboveiiicntioned. 



The quantity of clay ufed In the firft in- 

 flance was about forty cart-loads, fetched 

 about three miles ; in the laft, about fifteen 

 loads, fetched one mile. The quantity of 

 lime in the former cafe, one chaldron ; in the 

 latter, half a chaldron. 



From the fum of thefe particulars it is 

 plain, that the larger the pond, the lefs in 

 proportion is the expence. A refervoir to 

 contain two hundred cubical yards of water 

 requires little more than three hundred fquare 

 yards of coating; whereas one to contain only 

 fiftv yards of water would require one hundred 

 and twenty yards of coating : confequently a 

 cubical yard of the former would only coft (at 

 ninepence a yard for marAial labour materials 

 and carriage) eightcenpencc -, while the fams 

 quantity of the latter would coil near two 

 fhillings and fixpence. 



The UTILITY of Drinking Pools requires 

 not to be dwelt on : but the superiority of 

 pools made in the manner above defcribed, 

 to thofe which have formerly been made by 

 fome other art, or which have been formed 

 by nature or accident, may with propriety be 

 mer;tioncd. During the dry fcafons which 

 M 4 have 



