203 



100-88 



Greensand from Marl of Benjamin Conlson's pits, three miles north- 

 east of Woodstoicn. 



Description. — Colour of the granules, a dark rich olive-green ; 

 size, rather large ; constitues 90 per cent, of the marl. 

 Composition. — In 100 parts: 



99-79 



Greensand from Marl of Allen Wallace's pits, two miles and a 

 half ivest-northwest of Woodstoivn, Salem County. 



Description. — Colour of the granules, a dark green ; size, rather 

 large ; constitutes 90 per cent, of the marl. 

 Composition. — In 100 parts: 



Silica, .... 48-40 



Alumina, ... 7-30 



Protoxide of iron, - - 23-00 



Potash, - - - 11-47 



Lime, . . - . 1-20 



Water, - - - 8-15 



99-52 



