APPENDIX TO PARTS I, 11, AND UI. 
605 
APPENDIX TO PARTS I, 11, AND III. 
In this appendix I propose to give some figures that I have found 
extremely useful in making the calculation involved in turning analyses 
of minerals and ores into terms of their mineralogical composition, and 
in other calculations. 
The atomic weights used throughout this Memoir aie shown below : — 
List of aioifiic weights. 
Aluminium . . . . . . . .27*1 
Arsenic ......... 75*0 
Barium 137-4 
Calcium 40-0 
Carbon 12-0 
Chlorine . . . . . . . . . 35'45 
Cobalt 59-0 
Copper . . . . . . . . . 63'6 
Fluorine 19-0 
Hydrogen . • . . • • • • 1 ' 01 
Iron . . . . . . . . .56-0 
Lead 206-9 
Magnesium ........ 24- 36 
Manganese . . . . . . . . 55-0 
Nickel 58-7 
Oxygen 16-0 
Phosphorus , . . . . . . .31-0 
Potassium . . . . . . . . 39'15 
Silicon 28-4 
Sodium 23-05 
Zinc . . . . . . . . .60-4 
