S/K WILLIAM SIEMENS, F.R.S. 



297 



Other Bauxites which I have had occasion to analyse were 

 composed as follows : 



ANALYSES OF VARIOUS BAUXITES. 



FRENCH BAUXITES. First Group. 



H a O. 

 12'7 

 18-0 

 12-4 

 12-2 

 11-5 

 13-5 

 11-3 

 11-8 

 11-8 



1-2-1 



H a O. 

 15-9 

 13-0 

 10-05 

 11-8 

 12-0 

 9-4 

 12-5 

 15-9 



12-57 



