72 The Limestones, and Lime. [Feb., 



Jinalysis. 



1st specimen. 2d specimen. 



Carbonate of lime, - 46.85 43.13 



Carbonate of magnesia, 1.50 2.70 



Peroxide of iron, - - 1.55 2.70 



Silica and alumina, - 50. 48.67 



100. 98. 



Caustic lime, - - 26.24 25.37 

 Limestone of Worthington; color white, crystalline. 



Analysis. 

 Carbonate of lime, - - - 

 Carbonate of magnesia. 

 Oxide of iron, - - - . 



Peroxide of lime, 55.92. 



The east part of Massachusetts contains also a few beds of pri- 

 mary limestone, whose composition is as follows; color white, 

 and crystalline. 



Analysis. 



Carbonate of lime, 

 Carbonate of magnesia. 

 Peroxide of iron. 

 Silica of alumina, - 



Per cent of lime, 

 Specific gravity, - 



3. Limestones of JYew Hampshire. — Dr. Jackson has given 

 the composition of several important beds in New Hampshire, of 

 which we deem the following the most interesting. Haverhill; 

 color white, crystalline and free visibly from foreign matter. 



Analysis. 



Carbonate of lime, - - - 99.3 



Mica and quartz, - _ - 0.5 



Carbonate of magnesia, - - 0.2 



100. 



