JANUARY. 43, 



bandy at it, like those employed in navigations, 

 that this method would be of all others the 

 cheapest, especially on heavier soils. But hy 

 far the greatest part I have done by tumbrils, the 

 expence of which put out is 5d. per yaid for 

 team, and 2^d. a yard for labour ; this, with pay- 

 ing for laying picks, wedges, &c. also for stones 

 that rise, increase the whole expence to 8d. per 

 yard, which is at least a halfpenny per yard cheaper 

 than I can do it with my own teams ; the reason 

 of which is, that the man who contracts with me 

 drives his own horses, and looks after them. At 

 8^d. per yard, UO,OOO yards have cost me 4Q581. 

 excepting the small proportion hired at a halfpenny 

 a yard lower. 



" I come now to mention a few circumstances, 

 which I hope may tend to render this paper useful 

 to others not having the experience which I have 

 acquired : I shall use but few words, but they shall 

 be founded on positive experiment or attentive ob- 

 servation. 



'' Clay is much to be preferred to marl on these 

 sandy soils, some of which are loose, poor, and 

 even a black sand. By clay is to be understood 

 a grey clayey loam, some of it brick earth, and 

 all has with vinegar a small effervescence. Marl 

 is a white, greasy, chalky substance, that effer- 

 vesces strongly with acids : I make a universal rule, 

 on a second improvement, to lay clay on the fields 

 marled before ; sometimes marl where clay was 



spread 



