BULL. GEOL. SOC. AM. 



VOL. 18, 1906, PL. 20 



Figure 1. — Sea of Ckevasse.s in Marvixe Glacier 



At this point the glacier emerges from mountain valle.y. Here Russell easily crossed in ISflO. 

 Long-focus plioto.£;rai)li by O. Von Engclu, July :iO, 1900 



Figure 2. — Detail in crevassed Eastern Margin of Marvine Glacier at Blosso.m Island 

 riiotograpb by O. Von Engeln, July '29, 1906 



CREVASSED MARVINE GLACIER 



