CORRECTED ANALYSIS. 



There is given upon this sheet the corrected analysis of the 

 bronzite-norite described upon page 382 of the May-June num- 

 ber of this Journal. The tables containing percentages of chief 

 oxides, etc., have been calculated from this analysis, correspond- 

 ing to those formerly given upon pages 387-8, and are also 

 given here. It is requested that these analyses and tables be 

 substituted in the places indicated by the table and page num- 

 bers which accompany them. 



ANALYSIS OF BRONZITE-NORITE BY MR. GEORGE STEIGER. 



Na,0 



H 2 



P 2 5 

 CO, 



48.23 



1. 00 



18.26 



1.26 

 6.10 



9-39 

 10.84 



•73 



Table II, page 387 



( IOO + 



1-34 

 .26 



2.00 

 .07 



•43 



99.91 

 MnO, etc., not looked for. 



Si0 2 - 



Ti0 2 



A1 2 3 



Fe 2 3 



FeO - 



CaO 



MgO 



K 2 



Na,0 



3 



49.64 



1.03 



18.79 

 1.30 

 6.28 

 9.67 



1 1. 16 



•75 

 1.38 



99.91 



