THE GEOLOGY OF FUNAFUTI. 



( I 



observed in sections on the ocean side, and the layer was occasionally seen ont- 

 cropjiing on the inner slope of the Hurricane Bank, thus indicating a substantial 

 recession of the latter since the deposition of the pumice. This pumice layer is 

 repeated occasionally under similar conditions along the lagoon side of the atoll, 







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Fig. 18. — Inner part of the Hurricane Bank, south of Mangrove Swamp, Funafuti. 



where it frequently forms a projecting shelf, the pumice pebbles being bound together 

 by matted roots, chiefly of the cocoanut palm. 



The following analysis of this pumice, by T. Cooksey, Ph.D., B.Sc, is quoted from 

 Memoir III., Part 1, Australian Museum, Sydney, " The Atoll of Funafuti," p. 77 :— 



