Ores of Manganese. 
: Barytic. Silicates. 
Peroxide. Hydrate. = ————-*-- Sn 
ae Nee CORomatnchee.— Perriguewx. St. Marcel. Pesillo. 
- Crettnich. Timor. Calveron. Lavelline. Compact, Earthy. 
Red oxide of Manganese, 0.823 0.750 0.640 0.762 0.688 to .703 .703 .641 650 842 
Oxigene, §-  - 0.115 0.090 0.087 0.055 O71 .072 .067 .075 - - 067 
Water, - - - 0.012 0.010 0.011 0.078 .050 .040 .046 .070 
Red oxide ofiron, - 0.010 0.020 0.010 0.055 .015 a .068 .012 
Insoluble gangue, - 0,040 0.040 0012 - 026 020 .056 .100 
Carbonate of lime, - = 0.090 0.240 
Oxide of Copper, trace 
Alumine, - - . - - - .0.050 - ~ - - - 0.30 
Barytes, - - - - - - - - 150.165 .128 .046 
Silica, ee se) OSB eS el Oe wen ogoly une 
Lime, - - - - - - - - - : - - - 014 
Magnesia, - — - - - - - - - - - - . 014 
Peroxide of iron, 3 22) a ae - - og AB caer Mk UY ae oe 2 .028 
Oxide of Cobalt, — - ~ - - - . - - - - . - - - 008 
1.000 1.000 1.000 1.000 1.000 1.0001.0001.000 982. 1.013 
