2m 



Greensand from Marl of Jonathan Cauley's pits, three-fourths of a 

 mile northwest of Woodstown. 

 Description. — Colour of the granules, a rather dark olive- 

 green ; size, large; constitutes 86 per cent, of the marl. 

 Composition. — In 100 parts: 



Silica, - - - - 48-45 

 Alumina, ... 6-30 



Protoxide of iron, - - 24-31 

 Potash, - - - 12-01 



Lime, ... - a trace. 

 Water, - - - 8-40 



99-47 



Greensand from Marl of Samuel White's pits, Woodstown. 

 Description. — Colour of the granules, the medium tint of green; 

 size, somewhat large ; composes 88-26 per cent, of the stratum. 

 Composition. — In 100 parts: 



Silica, - - - - 50-16 

 Alumina, ... 600 



Protoxide of iron, - - 24-74 

 Potash, - - - 11-70 



Lime, - ... a trace. 

 Water, - - - 7-00 



99-60 



Greensand from Marl of Paul Scull's pits, three miles northwest 

 of Sculltown, Salem County. 

 Description. — Colour of the granules, a very dark green ; com- 

 poses 91-5 per cent, of the marl. 



99-86 



