78 PHYSIOGRAPHY. 



Nemalite. 



5. Its chief employment is in the manufacture of soap. It enters also 

 into the composition of glass, and is used in dyeing, washing, bleaching, 

 &c., both in the natural state, and purified by the assistance of chemical 

 processes. 



NATROSIDERITE. (See Jlchmite.) 



NECRONITE. (See Feldspar.) 



NEEDLE-ORE. (See Cupreous Bismuth.) 



NEEDLE-STONE. (See Mesotype.) 

 NEMALITE. Nemaline Atelene Picrosrnine. 



Massive ; composition thin columnar ; fibres parallel, 

 slightly curved. 



Lustre pearly. Color greyish, and bluish white. Trans- 

 lucent. 



Fibres elastic. Hardness = 2*0 . . .2*5. Sp. gr. = 

 2-30... 2-44. 



1. The fibres, when held in the flame of a lamp, become opake and 

 rigid ; and on being subjected to the heat of the blow-pipe, they become 

 friable, at the same time changing to a light brown color. Soluble in 

 acids, without effervescence. 



2. Analysis. 



By THOMSON. 



Magnesia 51-721 



Silica - - ' - - - 12 568 



Peroxide of iron .... 5-874 



Water 29-666 



5. It occurs in veins, traversing serpentine, at Hoboken, (N. J.) 



NEOPLASE. (See Botryogene.) 

 NEOTESENE. 



Primary form. Right square prism ? 

 Color green. 



1. It yields moisture on being heated, and 1 passes to a yellow color 

 In a higher temperature, it scarcely gives any odor of arsenic. It im- 



