CONTENTS. 



XXIU 



5. Iron Pyrites, 387 



6. Mag:iU'tic Iron Pyrites, 392 



7. White Iron Pyrites, 393 



8. Arsenical Iron Pyrites, 394 



9. Scorodite, 39G 



10. Iron Sinter, 396 



11. Spathoselron 397 



12. Ankerite, 398 



13. Copperas, 399 



1 4. Alumina-Sulphate of Iron, 400 



l.j. Chrome-Iron Ore, 400 



IG. Vivianito, 401 



17. Caco.\enite, 402 



18. Ilvaite, 403 



19. Silicate of Iron, 404 



20. Hudsonite, 405 



ORDER II. MANGANESE. 



1. Oxide of iVIanganese, 406 2. Manganese Spar, 406 



3. Babingtonitc, 407 



ORDER III. ZINC. 

 1. Zinc Blende, 408 2. Cadmia, 411 



ORDER IV. LEAD. 



1. Galena, 412 4. Yellow Lead Ore, 416 



2. White Lead Ore, 414 .'S. Pyromorphite, 417 



3. Anglesitc, 415 6. Vauquelinite, 418 



ORDER V. BISMUTH. 

 Native Bismuth, 419 



ORDER VI. COPPER. 



1. Native Copper, 420 4. Copper Pyrites, 423 



2. Red Copper Ore, 421 5. Green Malachite, 425 



3. Vitreous Copper, 422 6. Azurite, 426 



ORDER VII. TITANIUM. 



1. Native Titanium, 427 4. Ilmcnite, 431 



2. Anatase, 428 ;•' 5. Sphene,- 433 



3. Rutile, 428 6. Warwickite, 436 



ORDER VIII. MOLYBDENUM. 

 Molybdenite, 438 



ORDER IX. ARSENIC. 

 Orpiment, 439 



ORDER X. CERIUM. 

 Allanite 440 



1. Native Silver,. 



ORDER XI. SILVER. 

 442 2. Vitreous Silver, 



US 



