230 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 1 



PLATE 105 



Fig. 220 Hancock Expedition members landed at Wenman Island, Galapagos, 

 by means of the rocky shelf shown in the foreground, and made their 

 way precariously up the almost perpendicular basaltic lava cliffs to the 

 flattened summit of the headland. The island is the nesting site of 

 fork-tailed gulls, man-o'-war birds, and boobies. (Photograph by H. 

 W. Manter.) 



Fig. 221 The precipitous sides of Wenman Island, Galapagos, suggest that it is 

 the remnant of a volcanic crater. The landing was effected inside the 

 flat-topped headland shown at the center of the picture. Dredging 

 operations were conducted at a depth of 100 to 150 fathoms near by. 

 Chart 100, p. 417. 



PLATE 106 



Fig. 222 Marchena or Bindloe Island, Galapagos, showing lava flows which 

 seem so fresh that they might have cooled but yesterday. They have 

 blotted out every vestige of plant life, except perhaps on the distant 

 summits, which appeared to have escaped burial in this manner. 



Fig. 223 On the black lava sand at Marchena or Bindloe Island was discovered 

 the signal of distress erected by shipwrecked mariners of the sloop 

 Dinamita. Their desiccated bodies had been found ten days previously 

 by Portuguese fishermen. Chart 99, p. 417. 



PLATE 107 



Fig. 224 Tide pools at Darwin Bay, Tower Island, Galapagos. The mud flats 

 at the right were inhabited by fiddler crabs, while frigate birds nested 

 on the rocks to both right and left. The lava is fractured into rectangular 

 blocks. (Photograph by W. L. Schmitt.) Chart 98, p. 416. 



Fig. 225 Marine collectors at work on a rocky beach at Darwin Bay, Tower 

 Island, Galapagos. The headland marking the northern limit of the 

 entrance to Darwin Bay is shown in the distance, and between it and 

 the shore are two rocky reefs which prevent the ship's launch from 

 coming farther inshore. (Photograph by W. L. Schmitt.) 



PLATE 108 



Fig. 226 The landing place at Darwin Bay, Tower Island, consisting of an 

 arching beach and a small lagoon behind which rise the basaltic walls 

 of the rim of a volcanic crater. 



Fig. 227 The Velero III anchored in 27 fathoms in Darwin Bay, scarcely 150 

 yards from shore. The bay represents the cone of a mile-wide crater, 

 a portion of which has weathered away, admitting the sea. 



PLATE 109 



Fig. 228 Lava shores of Narborough Island, Galapagos, showing mangrove 

 thickets in the distance. (Photograph by Wm. R. Taylor.) Chart 101, 

 p. 418. 



Fig. 229 The island of Narborough, located across a narrow channel from 

 Tagus Cove. It is shield volcano 4,000 feet high and without the ir- 

 regularities of shape which characterize the other islands. Volcanic 

 activity has been observed at Narborough as recently as 1927. 



PLATE 110 



Fig. 230 Crater Lake, Albemarle Island, Galapagos. Tagus Cove may be seen to 

 the left, at a considerably lower level. (Photograph by H. W. Manter.) 



