loy Soc. Edm r 



Jehu: Bathymetrical and Geological Survey of Welsh Lakes-Plate VII. 



Vol XL. 



LLYN II&IAU 



LLYN CAWLYD. 



»LTITUOE6 FROM THE OR 



HEIGHT OF SURFACE Ol 

 GEA LEVEL 116 



Scale 3 inches to 1 mile. 

 Depths in feet. 



