MARLING TABLES. 



299 



they are very careless as to where they drop their heaps within 

 each rectangle; and the spreaders have more labour to distribute 

 the marl equally, and therefore are more apt to neglect it. Besides, 

 it is often requisite to alter the distances of the heaps, either because 

 of change of soil, or because of change in the sizes of the loads, 

 owing to altered condition of the roads. 



Marling Tables and Estimates. 



The following tables may be useful in facilitating calculations, 

 and promoting the important object of applying marl in equal and 

 uniform quantities, according to the quality of the marl and the 

 wants of the soil ; which object, however, is generally so little re- 

 garded, that few persons attempt by calculation to reach any of the 

 results which these tables are designed to show by mere reference. 



TABLE I. Showing the number of cubic feet of dug marl (as compressed by its 

 weight in the loaded carts'), necessary to furnish one per cent, of carbonate 

 of lime to the acre of soil, for the ploughed depths stated : 



TABLE II. Shoiving the number of even bushels of marl, as compressed by its 

 weight in the carts, necessary to furnish one per cent, of carbonate of lime to 

 the soil, for the tilled depths stated : 



