76 NEW SPECIES OF GARNET. 



The Garnet is in well formed crystals, distributed some- 

 what unevenly through the rock, colourless in transmitted 

 light. Zonary banding is present, and in many cases 

 augite is enclosed. On the edges of the section brush-like 

 aggregates of a brightly polarising mineral occur. These, 

 we think, may be referred to the soda pyroxene ^gerine. 



To this new species of garnet we propose to give the 

 name of " Johnstonotite" as a slight token of our apprecia- 

 tion of the valuable, and in many cases, arduous work 

 done by Mr. R. M. Johnston, in the Geology of this Island. 



