8 CONTENTS. 
Part II. Methods — Continued. Page. 
XX. Alkalies — Continued. 
Separation of alkalies by other methods 100 
The mercuric-oxide method 100 
The ammonium-carbonate method 1 00 
The amyl-alcohol method 101 
XXI. Carbon dioxide, carbon . 101 
XXII. Chlorine 103 
XXIII. Fluorine , . . . . 103 
XXIV. Sulphur 105 
XXV. Boron 107 
XXVI. Nitrogen 107 
XXVII. Special operations s 108 
Detection of nepheline in presence of olivine 1 08 
Estimation of soluble silica 109 
XXVIII. Estimation of minute traces of certain constituents 110 
