134 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL.1 



Fig. 116 Pond Island, Gulf of California, seen from the deck of Velero III. The 

 island lies to the south of Angel de la Guardia Island and encloses a 

 large lagoon in which rock oysters are found. Chart 59, p. 400. 



PLATES 54, 55 



Fig. 117 (A panorama.) A view of the north end of Angel de la Guardia Island, 

 Gulf of California, showing Granite Island on the left, Mejia Island 

 on the right, and the entire bay of Puerto Refugio between them. 



Fig. 118 (A panorama.) San Felipe Bay, seen from the east. In the extreme 

 distance rises the mountain range which forms the backbone of the 

 Lower California peninsula and culminates in Mr. San Pedro Martir, 

 elevation 10,000 feet, opposite San Felipe Bay. Chart 63, p. 402. 



PLATE 56 



Fig. 119 A mountain of pumice, located on the east side of Angel de la Guardia 

 Island, Gulf of California. Pieces of this rock will float when placed 

 in water. 



Fig. 120 A nameless islet in Puerto Refugio Bay, Angel de la Guardia Island, 

 Gulf of California. 



PLATE 57 



Fig. 121 A perfect spit separates the lagoon in the background from Gonzaga 

 Bay (shown in the left foreground). In the right foreground is the 

 narrow channel which lies between the tip of the sand spit and the 

 rocky promontory from which the photograph was taken. The lagoon is 

 a favorite stopping place for migratory birds. 



Fig. 122 The island of San Luis, located north of Gonzaga Bay in the Gulf of 

 California, is composed entirely of a soft gray sandstone which shows 

 beautiful bedding. 



PLATES 58, 59 



Fig. 123 Nesting colony of Heerman gulls at George's Island, Gulf of Califor- 

 nia. The site chosen by the birds is an ancient alluvial fan. No eggs 

 had yet been laid at the time the picture was taken. 



Fig. 124 George's Island, seen from the northwest. Velero III may be seen in the 

 distance directly above the remnants of an old alluvial fan. The reef 

 in the foreground is awash at high tide. 



Fig. 125 Marine biologists collecting on a reef which extends between two of 

 the series of sea stacks which comprise George's Island, Gulf of Cali- 

 fornia. 



PLATE 60 



Fig. 126 Heerman gulls nesting on the remnants of an ancient alluvial fan at 

 George's Island, Gulf of California. 



Fig. 127 Consag Rock, a conspicuous landmark for vessels setting a course to the 

 mouth of the Colorado River. It is of basalt, the columns showing al- 

 most vertical jointing, and rises from the otherwise muddy floor of the 

 upper Gulf to a height of 285 feet. Chart 63, p. 402. 



Fig. 128 Rocky Point, Sonora, was the northernmost locality visited by Velero 

 III on the east side of the Gulf of California. It is the terminus of an 

 almost impassable road leading across the desert from southern Ari- 

 zona. Chart 64, p. 402. 



