SMITHSflNIAN CONTRIHUTIONS To KNOWLEDGE— SHERZKR. 



PI.AIE XXXI. 



Tongue and Moraines of tlie lUecillcwaet Glacier, Aus;iist, 1S99. rublislied tlirough ihe courtesy of George and William S. Vaux, ]r. From the 



Proceedings of the Philadelphia Academy of Natural Sciences, iSgg. 



