Journal Royal Society N S.W Vol XXV Flak IM. 



FIG. I. CRYSTALLIZED KAOLINITE. 



FROM CLAY. CRONULLA BEACH 

 PORT HACKING N R SYDNEY, 



FIG. 2. AFTER HEATING WITH BLOWPIPE 



ALL MAGNIFIED ABOUT 50 DIAMETERS. 



S.T.LEiCHBC'.UTH. 



