283 



The proportion of -potash which this marl contains, as obtained 

 by analysis, is 12 per cent. 



Marl from the estate of William Howe^ Mullica Hill. 



Description. — Colour, dull verdigris green; the washed grains 

 of a richer green, and small in size. 

 Composition. — In 100 parts : 



Greensand, - - - 91-95 

 Clay, - . . . 8-05 



Quartzose sand, - - none. 



10000 

 The proportion of potash in this marl by actual analysis, is 10-2 

 per cent. 



Marl from, the farm, of Mr. Jonathan Coulson, one mile 

 from, Mullica Hill. 



Description. — Colour, dark grayish-green ; the washed grains, 

 large in size, and of a deeper green colour. 



Composition. — In 100 parts: 



Greensand, - - - 86 



Clay, - - - - 11 



Quartzose sand, - - - 3 



100-00 



The proportion of potash in this marl deduced from that in the 

 greensand, is 9-8 per cent. 



Marl from the farm, of Josiah Lippincot, one mile south- 

 southwest of Mullica Hill. 



Description. — Colour, dull grayish-green, owing to the presence 

 of clay ; the washed granules dark green, and of medium size. 



Composition. — In 100 parts. 



Greensand, - . - 89-52 

 Clay, - - - . 7-88 



Quartzose sand, - - 2-60 



10000 



