288 



Marl from the farm of Jonathan Cauley, three quarters of 

 a mile from Woodstown. 



Description. — Colour, a clear light-green ; washed granules, a 

 little darker; size, large. 



Composition. — In 100 parts : 



Greensand, - - - 86 



Clay, .... 14 



Quartzose sand, - - - none. 



100 



The proportion of potash which analysis shows in this marl, is 

 10-3 per cent. 



Marl from the farm of Elizabeth Borton, two m,iles north- 

 east of Woodstown, Gloucester county. 



Description. — Colour, dark grayish green ; washed granules, 

 dark-green, of medium size. 



Composition. — In 100 parts : 



Greensand, ... 90'13 

 Clay, .... 9-87 



Quartzose sand, - - none. 



10000 

 The potash in this marl deduced from that in the greensand, is 

 10-3 per cent. 



Marl from the farm of Mr. Jonathan Riley, Woodstown. 



Description. — Colour, dull greenish gray; the washed grains 

 of a very rich sea-green colour and very small in size. 



Composition. — In 100 parts: 



Greensand, - - - 88-28 

 Clay, .... 11-72 

 Quartzose sand, - - none. 

 Carbonate of lime, - a trace. 



10000 



The proportion of potash, as deduced from the greensand, is 

 10-1 per cent. 



