510 Prof. W. J. Sollas. Report to the Committee appointed 



The conical mountain below the 140 fathoms line, with its parabolic 

 slope, is suggestively similar to a volcano; but, if so, its crater must 

 have been immense, 10 miles across at least. A volcano, 12,000 feet 

 in height, with a cra.ter 10 miles in diameter, is, however, not 

 an unknown phenomenon ; within the limits of the Pacific we may 

 cite Haleakala, in Maui, Sandwich Islands, as closely comparable. 



A part of my work while on the island was the construction of a 

 geological sketch map, part of which is shown below ; its interest 

 chiefly centres in a broad expanse near the Mission Station, where the 

 two narrow limbs of the island meet, or, if it be preferred, whence 



Corner of Funafuti, showing Mangrove Swamp and Heliopora Keef. 



A.S.C. Mangrove swamp, 

 reef. 



sot/dated cora/ breccia 

 N, I/ ~< ming parC of the f/oor 

 of the -swamo. 



C3 o oi C//nker f/e/d of 



o o 



cora/ fragments. 



