219 



Analysis of the Upper Secondary Limestone of Woodnut Petit, 



Salem county. 



Composition. — In 100 parts : 



Carbonate of linne, - 77-80 



Carbonate of magnesia, - 1-20 



Alumina and oxide of iron, 1*80 



Insoluble matter, - - 17-80 



Water, . - - - M2 



99-72 



This stratum is destined to prove of signal service to the agri- 

 culture of all the region adjacent to it; for lime is particularly- 

 useful upon lands destitute of calcareous matter, like some of the 

 more sandy tracts of New Jersey. The lime from this rock in 

 Salem, is growing rapidly into use. I would recommend — as 

 promising to prove highly beneficial — the soft, friable, uncon- 

 creted parts of the stratum which lie between the solid layers, 

 especially near the bottom of the formation. Being already in a 

 pulverulent state, and composed chiefly of carbonate of lime, 

 with occasionally some of the grains of the green marl, the whole 

 must constitute a calcareous marl, admirably adapted to ame- 

 liorate the lands of the surrounding country. 



Both the Ii?nestone and the calcareous sand occur well de- 

 veloped on the farm of Mr. J. Ridgeway, near Mannington Hill. 

 The rock at this place has a subcrystalline texture, being tolerably 

 well cemented ; towards the centre of the layers it is of a bluish 

 colour. It is quarried to some extent and burned on the spot, 

 yielding a very good lime. The price of this lime is about nine 

 cents per bushel. The calcareous sand of this place is also 

 growing into demand as a marl, and is vended at the rate of 

 twelve and a half cents per load. 



Analysis of Limestone from the farm of Hazleton Stacy, Salem 



county. 



Description. — Colour, straw-yellow, compact, subcrystalline, 

 and granular ; consists largely of the fragments of fossils. 



