viii 



GLOSSARY AND INDEX OF TEEMS. 



Carbonize. To convert into char- 

 coal. 



Carburet. A compound of an ele- 

 ment with carbon, not acid. 



Catalan forge, 237. 



Celandine green. Green with blue 

 and gray ; from the plant called 

 celandine. 



Cementation, 238. 



Chalybeate. Impregnated with 

 iron, 80. 



Chert. A siliceous stone containing 

 some lime ; also, hornstone. 



Chlorid. Combination of an ele- 

 ment with chlorine. 



Chloride. Containing chlorite. 



Chromate. A salt containing chro- 

 mic acid. 



Cinereous. [Lat. cinis, ashes.] 

 Resembling ashes. 



Cleavage 33. 



Coke, 90. 



Columnar, 52. 



Compound crystals, 42. 



Conchoidal, 65. 



Coralloidal. Having a resemblance 

 to coral. 



Cretaceous. [Lat. creta, chalk.] 

 Pertaining to chalk. 



Cropping out. The rising of layers 

 of rock to the surface. 



Crucible. [Lat. crux, a cross.] A 

 pot made of earth or clay for 

 melting, or reduction. 



Cruciform, [Lat. crux, a cross,] 

 43. 



Crystal, [ Greek krustallos, ice,] 19 ; 

 systems of crystallization, 24, 

 32. 



Cube, 25. 



Cupel, cupellation, 317, 328. 



Cupreous. [Lat. cuprum, copper.] 

 Containing copper. 



Curved crystals, 42. 



Decrepitate. To crackle and fly 

 apart when heated. 



Deflagrate. To burn with vivid 

 combustion. 



Deliquesce. To change to a liquid, 

 on exposure ; arising from the 

 attraction of moisture. 



Dendrites. JGr. dendron, tree.] 



Delicate delineations branching 

 like a tree ; due to infiltration of 

 oxyd of iron or manganese. 



Density. Specific gravity. 



Desiccate. To dry, to exhaust of 

 moisture. 



Diaphaneity, 58. 



Dichroism, 57. 



Dimetric system, 32. 



Dimorphism, 44. 



Divergent, 53. 



Disintegrate. To fall to pieces ; a 

 result of exposure and partial de- 

 composition. 



Disseminated. Scattered through 

 a rock or gangue. 



Dodecahedron, rhombic, 25 ; isos- 

 celes, 39, fig. 65 ; pentagonal 37 ; 

 scalene, 40. 



Dolomitic. Pertaining to dolomite. 



Dressing of ores. The picking and 

 sorting of ores, and washing pre- 

 paratory to reduction. 



Drusy, 54. 



Dull, 56. 



Earthy. Soft like earth, and with- 

 out luster. 



Ebullition. The state of boiling. 



Effervescence, 67. 



Effloresce. To change to a state 

 of powder, by exposure ; arises 

 from the escape of water. 



Elastic, 53, 65. Electricity of min- 

 erals, etc., 62. 



Elements, 72. 



Ellipsoid, 42. 



Elutriation. [Lat. elutrio, to poui 

 from one vessel to another.] 

 Mixing a powdered substance 

 (as powdered flint) with water, 

 and then after the coarser parti- 

 cles have subsided, carefully de- 

 canting the liquid and putting it 

 away to settle, in order to obtain 

 the impalpable powder which is 

 finally deposited. 



Elvan. In Cornwall, the granite 

 masses forming broad veins in 

 the killas, and containing the 

 stockwerks. 



Enamel. A glass having an ap« 



