CONTENTS. 
XXI11 
5. Iron Pyrites,.. 
. 387 
13. Copperas,. 
399 
6. Magnetic Iron Pyrites, 
14. Alumina-Sulphate of Iron,.... 
400 
7. White Iron Pyrites,. ... 
15. Chrome-Iron Ore,. 
400 
8. Arsenical Iron Pyrites, , 
16. Vivianite,.. 
401 
9. Scorodite,. 
. 396 
17. Cacoxenite,. 
402 
10. Iron Sinter,. 
. 396 
18. Ilvaite,. 
403 
11. Spathose Iron, ........ 
19. Silicate of Iron,. 
404 
12. Ankerite,. 
20. Hudsonite,. 
405 
ORDER II. MANGANESE. 
1. Oxide of Manganese,.. 
. 406 
2. Manganese Spar,. 
406 
3. 
Babingtonite, .. . 
ORDER III. ZINC. 
1. Zinc Blende,. 
2. Cadmia,. 
411 
ORDER IV. LEAD. 
1. Galena,... 
4. Yellow Lead Ore,. 
416 
2. White Lead Ore,.. 
5. Pyromorphite,. 
417 
3. Anglesite,.. 
6. Vauquelinite,. 
418 
ORDER V. 
BISMUTH. 
Native Bismuth, .. . 
ORDER VI. 
COPPER. 
1. Native Copper,. 
4. Copper Pyrites,. 
423 
2. Red Copper Ore,. 
5. Green Malachite,. 
425 
3. Vitreous Copper,. 
6. Azurite, . 
426 
ORDER VII. 
TITANIUM. . 
1. Native Titanium,. 
4. Ilmenite,. 
431 
2. Anatase,. 
. 428 
Ft Spheric 
433 
3. Rutile,.. 
6. Warwickite,. 
436 
ORDER VIII. MOLYBDENUM. 
Molybdenite,. 438 
ORDER IX. ARSENIC. 
--T' 
Orpiment,. 439 
ORDER X. CERIUM. 
Allanite,. 440 
ORDER XI. SILVER. 
I. Native Silver,. 442 2. Vitreous Silver,.. 443 
