GUAM. 369 



knolls (PI. 194, figs. 1, 3). The low vertical cliffs on the western shore, 

 rising here and there directly from the sea, are not more than fifty to 

 sixty feet high and are probably remnants of the first and part of the 

 second terrace, while the higher vertical cliffs immediately behind, which 

 gradually become lower and lower as we go south, are parts of the 

 second, third, and fourth terraces. From the latter the land extends nearly 

 horizontally towards the interior of the island (PI. 194, figs. 1-3). 



From the northwest point looking south, we could see at a distance 

 of about twenty miles the volcanic ridge on the southwest side of the 

 island ; its peculiar outlines are in marked contrast with those of the lime- 

 stone bluffs and points we followed from Point Hanoum (Pis. 195, figs. 2, 3 ; 

 197). The west coast presents no striking differences from the east coast 

 until we come upon Piinta de los Amantes, where the caverns plainly 

 indicate the existence of four terraces in the face of the vertical cliffs. To 

 the south of the point an extensive coral sand beach stretches along the 

 base of the cliffs; to the south of Point Fafai a number of broad valleys 

 open out on the west face ; they extend inland and have been formed from 

 the disintegration of remnants of limestone, such as still flank, in places, 

 the lower portions of the volcanic mass which has burst through the 

 coralliferous limestone once occupying the southern pai't of the island 

 (Pis. 194, fig. 3; 195, figs. 1-3; 197, fig. 1; 198, figs. 1, 2). 



As we steamed south, parallel with the west coast, the high vertical cliffs 

 become gradually lower, until at Punta de los Amantes we find the lowest 

 of the vertical cliffs which, to the north, form a series of promontories at 

 right angles to the west coast, separated by deep bights (PI. 194, fig. 2). 

 The east as well as the west coast presents a deeply scalloped appear- 

 ance, due to the gradual inroads made by the sea in the vertical cliffs 

 (PI. 233, fig. 4). The bays forming the small reef ports on the southern 

 part of 'the east coast of the island, like Port Pago and Ports Ynarajan 

 and Tarafofo, as well as the larger indentations like Tumun and Agana 

 on the west coast, and a number of smaller bights, indicate the character of 

 the submarine erosion which has taken place on those shores during 

 the prevalence of the trades or of westerly and northwesterly winds 

 (PI. 233, fig. 4). The extent of the disintegration of the faces of the 



