MONOGRAPH XLI PI XXI 



% 



(|uelpTi 



'■ ' ^ 111 



\ 



MiUoii 



LEGEND 



":d 



/' I I i-' 



I L iv "■ WMsmlr i ^'l3 1 j. 





I Midarc^iLriH^--. 





Contour interval 50C* feet 

 Datitm is nif^t/t- seo <?«Te^ 





I 1 iJ ^ uHdiftinaRP 



^^ 



Betprmined borders of 

 glacial lafcus orof ice 



? ? 



