BY D. MAWSON. 483 



Plate xix. 



The highly-tilted Miocene limestones (dip 55° S. , 17° W.) of the Wai Bubo, 

 Santo. 



Plate XX. 



Cape Ukuani from the south, Santo. The rock in the foreground is recent 

 raised coral limestone. Outcropping at the base of the headland, 

 and at increasingly higher elevations inland, are massive agglomer- 

 ates which pass upwards into well-bedded soapstone-like foundation- 

 beds, a good face of which can be seen on the photo amongst the 

 trees; a coral limestone capping is developed in the right hand top 

 corner, but is hidden from view by the dense foliage. 



Plate xxi. 



The hill Tumebu and vicinity as seen from Tangoa, South Santo. Tumebu, 

 an outlier, so to speak, of the terraces behind, is a typical raised 

 coral hill. 



Plate xxii. 



Fig. 1. — View taken from M. Chevillard's plantation overlooking Vila 

 Harbour and Meli Bay, and showing a wonderful raised coral 

 plateau (almost blending with the sky) in the distance eight miles 

 away. 



Fig.2. — Hornblende andesite of Wai Malikoliko; magnified 23 diams.; for 

 description, see p. 459. 



Fig.3. — A crystal of uralite still retaining a kernel of the original pyroxene; 

 magnified 30 diams.; surrounding the lighter pyroxene is fibrous 

 smaragdite. From the uralite porphyry of Malekula; for descrip- 

 tion, see p. 468. 



Figi4. — Corroded hornblende crystal out of basic hornblende pyroxene 

 andesite from North Malekula; magnified 27 diams.; for descrip- 

 tion, see p.461. 



Fig. 5. — A typical felspar crystal in the felsophyric hypersthene andesite of 

 Havannah Harbour; magnified 24 diams. Shows glass inclusions 

 arranged in curtain-structure. The white patches in the ground- 

 mass are cellular cavities; for description, see p. 457. 



Plate xxiii. 



Fig.l. — Pseudomorph in actinolite (dark lath-shaped crystals) and felspar, 

 etc., after a mineral (species uncertain) in the uralite porphyry 

 from Malekula; magnified 47 diams,; for description, see p. 469. 



