PLATE III, 



FIG. 4. 



a Sand. 



r^^Travertine with 



nixhrniactotAs " vy(-6.^' 



Scale: Ufi., I inch. 



] Ghalcedony. 



FICJ. T). 



^^^^^^;^^izr^^3^n^^7'^^-5?~i'?>^^'5!^<'^T^5.sr!^^''w!.^ 



Ml. Watson (Granite Rangn). 

 FIG. 6. 



" . ^ ^^___^«V5 ^ 



Birksgate Mange ( Granite). 



E.cin 



