[HARRINGTON | MINERALOGICAL CHEMISTRY 17 
A point of interest in connection with mineral synthesis is the variety 
of methods by which the same mineral can, in many cases, be produced. 
[f geologists paid more attention to this question they would perhaps be 
less inclined to dogmatise with regard to the origin of mineral deposits 
than they have sometimes been in the past. 

The above examples of methods of mineral synthesis are mainly from Doelter’s 
‘* Allgemeine Chemische Mineralogie,” Leipsic, 1890. 
Sec. III., 1895. 2. 
