SMITHSONIAN CONTRIBUTIONS TO KNOWLEDGE SHERZER. 



PLATE XLI. 



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Vic,. I. Stratification of Asulkan Glacier. The dates are added upon the sup- 

 position that the strata represent seasonal deposition. Copyrighted, 

 1902, by the Detroit Photographic Co. 



FIG. 2. General view of Asulkan Glacier in 1898. Reproduced through courtesy of the Messrs. Vaux. Compare with plate XXXIX, 



figure I. 



