THE NATURAL ARRANGEMENT. 



10. Uncleavable (S.) Cerite. 



11. Monotomous (S.) Yttro-Tantalite. 



Gen. III. IRON-ORE. (M.) H. 5'0 . . . 65. G. 3-8 . . . 5-3. 



Sp. 1. Octahedral (M ) Magnetic Iron. 



2- C h r o m a t e d (S.) Chrome-Ore. 



3. Dodecahedral (M.) Franklinite. 



4. A x o t o m o u s (M. ) Crichlomte. 



5. Uncleavable (S) Mohsite. 



6. Rhombohedral (M.) Specular Iron. 



7. Prismatic (M ) Limonite. 



8. Di-prismatic (M.) Yetiite. 



Gen. IV. BARYTE-ORE. (S.) H. 50..,6'6. G. 6'0 

 ...74. 



Sp. 1 . P e r i t o m o u s (S ) Tin-Ore. 



2. Prismatic (S ) Wolfram. 



3. P y r a rn i d a 1 ( S ) Columbite. 



4. Uncleavable (S.) Pitchblende. 



Gen. V. MANGANESE-ORE. (M.) Color black. H. 2'0 



...65. G. 3 1 ...49- 



Sp. 1. Pyramidal (M ) Black Manganese. 



2. Brachytipous (M) Braunite. 



3- Uncleavable (M ) Psilomelane. 



4. Prism atoidal (M.) Manganite. 



5. Prismatic (iM ) Pyrolusite. 



6. S t a p h y 1 i n e (S ) Cupreous Manganese. 



