94 
Plate V 
Figure A. General view of McKay lake showing marl bed, underlain by 
sand and gravel, in upper middle of photograph. (Photograph by 
Canadian Air Board, from elevation 1,300 feet.) (Page 60.) 
Figure B. Detail of above showing marl bed and underlying sands and 
gravels. (Photograph by E. M. Kindle.) (Page 60.) ■ 
