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360 Chemical Analysis, ^c. 



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Anthracite from Mansfield, Mass. 



This coal is found in a bed on the estate of Mr, Alfred 

 Hardon. The bed, which is two feet wide, is included 

 in grau-wackc; with wacke impregnated with carbon, 

 and intersected by numerous stems of fossil plants, be- 

 longing apparently to the EquiSETACEJE. Carbonifer- 

 ous slate, or slate filled with impressions of species of 

 the genus of fossil plants called Neuropteris by Brong- 

 niart, and containing casts of a plant closely allied to the 

 cactus tribe, is also found in immediate contact with the 



coal. 



mn 



Harlan, was also found. The strata and bed of coal run 



E, N. E., W. S. W., and dip 52^ to the N. N. W. The 



specimens of coal analyzed were taken from the bed by 



myself, and were examined a few days after my visit to 

 Mansfield. 



Oct. 30th, 1835. Two specimens were selected for 

 analysis. 



1.73, 



gravity 



Mounta 



gravity 



The specimen of .anthracite from Mansfield, whose 

 specific gravity was 1.71, pulverized and submitted to 

 analysis, by mixing it with chloride of sodium and nitre, 

 and deflagrating it in a red hot platina crucible, and then 



iiffn 



rams 



^"^°° ^ , 98 The other specimen gave 



Per oxide of iron and alumina 2 Carbon ,- 96 



Per oxide of iron and alumina 4 

 100 



100 



This coal bums like the Peach Mountain anthracite, 

 and leaves red ashes. Explorations are now going on 

 for the purpose of discoverinff a wider bed . 



