SMITHSONIAN CONTRIBUTIONS TO KNOWLEDGE SHERZER. 



PLATE XVIII. 



FIG. I. Glacial table, Victoria Glacier, looking southwest. Observe undercutting action of 

 rays upon south side and shadow cast by the rock upon north side, with 

 resultant ridge of ice. 



IMG. 2. Dethroned glacial table, Victoria Glacier, looking northeast. The boulder fallen 

 to the south by undercutting action of sun's rays. 



