237 



Composition. — In 100 parts. 



Greensand, - - - 80 



Clay, .... 14 



Quartzose sand, - - 6 



100 



The proportion of the potash, ascertained by direct experiment, 

 is 8 per cent. 



The marl from the lower portion of the bed at Captain Taylor's, 

 is richer in greensand than that from the upper, as will be seen 

 by the following analysis: 

 Composition. — In 100 parts: 



Greensand, ... 90 



Clay, .... 5 



Quartzose sand, - - 5 



100 



The amount o( potash which it contains, is 9.9 per cent. 



Between Middletown and Chapel, Jonathan Tunis has pene- 

 trated into the lower greensand marl, and uses it in preference to 

 the yellow top bed, and with great advantage to the crop. 



Near to Chapel, and about two miles east of Middletown, 

 Mr. Daniel G. Conover, after penetrating the overlying soil 

 and ferruginous layer, has obtained a marl of a singular 

 mottled appearance ; consisting of a mixture of light-coloured 

 clay and greensand, looking when freshly cut somewhat like 

 a decomposing granite. The lower portion of this marl has 

 for its 



Composition. — In 100 parts : 



Greensand, - - - 84 

 Clay, .... 10 

 Quartzose sand, . . 6 



100 



The proportion of potash deduced from that of the greensand, 

 is 9-6 per cent. 



