PLATE LXXIV 



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Fig. 1. TENT ISLAND, SHOWING COARSE VOLCANIC AGGLOMERATE 

 The low white wall in the foreground i-* edfre of the ice-foot. Tlie men are standing on sea ice 



Fig. 2. BEAUFORT ISLAND, A VOLCANIC ISLAND 13 MILES NORTH OF 



CAPE BIRD 



\Tofacep. 228 



