Journal Royal Society of N.S. W., Vol. XXXV., 1901. 



Plate II. 



H 





&^&l'a 



mm- 



w}:Mm 



Fig. 1. Felspar crystal,"derived from granite, enclosed in the nephelinitic tinguaite 

 of Kosciusko. X 17 diameters. 



Fig. 2. Granule of quartz, derived from granite, enclosed in the nephelinitic tinguaite. 



FLAK 



showing position of 



Dyke of Tinguaite 



,®^©HW^££© IFlLJ^^PH^W 



& / // 'M^twvnam 



Blue Lake 



or 



o*«kj % Oub Lake / <v^^Z.. Merewether 



or Harnetts Lake / 



Wr Kosciusko 



Fig. 3. 



