482 THE GEOLOGY OF THE NEW HEBRIDES, 



EXPLANATION OF PLATES XIV. -XXIX. 



Plate xiv. 

 View of the hills (highest point, Mt. Macdonald, 2203 ft. ) to the south of 

 Undine Bay, Efate; taken from near the north-west corner of Pele. 

 Note the various raised reefs and their respective dips. The 

 foundation-rock, a basic agglomerate traversed by numerous dykes 

 and sills, is largely exposed at the higher levels; above, forming a 

 capping, distinctly outlined in the photograph, is a further raised 

 reef-horizon. 



Plate XV. 



View of the volcanic Island of Mau, taken from the north-east coast of Pele. 

 The rock in the foreground is a recent coral limestone very much 

 darkened, owing to the quantity of basic lava fragments bound up 

 in it. Such fragments are washed or rolled down from the steep 

 cliffs behind, and carried out into the growing reef. The surf -line 

 marks the edge of the fringing reef; the large black rocks supported 

 on it nearer inshore are rolled masses of basalt. 



Plate xvi. 



Fig. 1. — Nguna Island, taken from Scott's Plantation, Efat6. The island is 

 here seen to be formed of a line of craters, three of which are 

 visible in the photograph. The one furthest to the left is Tavanaki 

 (2013 ft.), from the top of which several photos were subsequently 

 taken. 



Fig. 2.— View of the islands to the north, taken from the summit of Nguna 

 (Tavanaki). The islands in view, reading from the left, are : — Mai, 

 distant 25 miles; Makura, 20 miles; Matoso (two hills joined by a 

 low spit), 12 miles; Monument Kock ok Wot (an isolated rock 

 standing to the right in the photograph), 12 miles. The three 

 islands in the back row are : — Tangoa (behind the eastern extremity 

 of Matosa), 35 miles; Buxinga (next in order) 30 miles; ToNGAraia 

 (on the extreme right behind Wot), 31 miles. 



Plate xvii. 

 The west coast of Santo taken from Tasiriki, looking north. To the right, 

 the recent coral formations appear, contrasting strongly with the 

 precipitous blufi's of Miocene rocks at Cape Babana in the distance. 



Plate xviii. 

 Taken from Tangoa, looking towards Losubunu (Santo Peak, 5520 ft.), 

 distant IG miles; showing the disposition of the Miocene Kanges. 

 A horizontal sky-line in the vicinity of Losubunu, terminating to the 

 south of Talapone, probably indicates a former sea-level now 

 elevated over 4000 ft. 



