IONIAN CONTRIBUTIONS TO KNOWLEDGE— SHERZER. 



PLATE XIII. 



^griM^^-m4>¥^!^iL^ r^ 



nine bands giving rise to "dirt stripes," near nose of Illecillewaet Glacier. Bands 

 would here be conformable with strata if l:\tter were present. 



Fic. 2.— Contorted blue bands, Yoho Glacier. Suppo.sed to indicate differential i 



flowage. 



lie uyke tilled with two tiers of hori.:onlal ice prisms meeting 

 toivards center. 



Fig. 4.— Crevasse in Victoria Glacier, showing how superficial debris may 

 attain an englacial or subglacial position. 



