THE VICTORIAN NATURALIST.— Vol. XXVII. 



Plate x. 

 Fig. 1. 



September, 1910. 



Ordinary light. X 35 diam. 

 GREYWACKE, FROM HORSESHOE BEND. 



FlQ. 2. 



Ordinary light. X 8 diam, 

 QUARTZITE, FROM SOUTH OF SAND PITS. 



Photo-micros, by H. J. Grayson. 



