22 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 
Vatu Vara (Plates 25, 26),— The mass of the island rises as a vast 
truncated pyramid, presenting along the summit an almost perpendic- 
ular cliff 200 feet high. It possesses a sub-horizontal summit of some 
forty acres. On closer examination, the top is seen to contain innumer- 
VATU VARA SEEN FROM MANGO. 
able pits and depressions, varying from 6 to 30 feet in depth. Traces of 
five uplifts are visible on its ascent. Three of these are ‘‘ terrace” 
formations. Two are in form of beach-erosion lines. 
Yathata (Plate 27). — Seen from the southeast, it looks like a hat. 
From the east it appears to consist of six steps arranged symmetrically 
e 
YATHATA SEEN FROM NGILLANGILLAH. 
with respect to a central dome. On the western side of the island this 
symmetry is broken by a volcanic mass that has welled up to the 500 feet 
level, scorching and whitening the limestone. A small island called 
Kaimbu is included in the same lagoon. They are 500 yards apart, and 
YATHATA AND KAIMBU FROM MANGO. 
the water between is about 6 feet deep. On Kaimbu a line of beach 
erosion exists a few feet above high-water mark. The dominating cap, 
840 feet in height, is ‘ sugar-loaf.” 
Kambara. — It is much as Mango may have been, one solitary ande- 
site mass of 30° slope, rising 470 feet above the sea to mark its era of 
