102 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 1 



A low, sandy bluff extends northward 2 miles from Point Tierra 

 Firma, and lying off this bluff 1% miles is an irregular island, Coronados 

 Island, 1% miles by 1% miles. Nearly all the coast of this island is steep 

 and rocky, but a low, sandy, and stony spit extends to the southwestward. 

 South of Coronados Island, there are dredging stations in coralline, sand, 

 and broken shell. 



From the north end of the Tierra Firma Point, the coast, mostly 

 bold and rocky, extends slightly west of northward for 1 1 miles and then 

 turns abruptly eastward to form Mangles Point, thus forming a shallow 

 anchorage, Mangles Anchorage, where shore collecting and dredging in 

 rather shallow water have been done. 



From Mangles Point to Pulpito Point, 15 miles, there is a similar 

 trend in the coast line except that the northern half of it recedes some- 

 what to form San Basilio Bay. Pulpito Point is conspicuous because of 

 the fact that, although the headland is 500 feet high, the connection with 

 the mainland is very much lower, so that at a distance it appears to be an 

 island. The point protects an anchorage in much the same way as 

 Mangles Point does. There are 2 dredging stations off the Point, one 

 in 14 fathoms and the other in 55 fathoms. 



North of Pulpito Point, 1*4 miles, is Santa Antonita Point, after 

 which the coast recedes to the westward and then turns northward again 

 to form San Nicolas Bay, terminating to the northward in Santa Teresa 

 Point. The bay is 1 1 miles across the entrance. Opposite the center of the 

 bay, 5 miles offshore, is Ildefonso Island, a barren rock, 1*4 by % m ^ e 

 in extent. Collecting has been done on the rocky shore of the island, and 

 dredging in 50 and in 190 fathoms between the island and the mainland. 



From Santa Teresa Point, the coast extends northwesterly to Point 

 Concepcion, 20 miles, with only one sizable point between, Colorado 

 Point, 4y 2 miles from Santa Teresa Point. 



Point Concepcion is an ill-defined point at the extremity of a penin- 

 sula that lies between Concepcion Bay and the open Gulf. Considerable 

 dredging has been done off the end of the peninsula in bottom in which 

 both live and dead shells (Strombus) were conspicuous. 



Concepcion Bay extends southward for 22 miles with an entrance 

 channel 2 miles wide, but widening farther in to as much as 5 miles. The 

 eastern shore and the head of the bay are regular in outline and consist 

 mainly of sand and pebble beaches. The western shore is much more ir- 

 regular, with one conspicuous indentation, Coyote Bay, and with many 

 islands, islets, and shoals. There are numerous bluff points with sand 



