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APPENDIX 11. 



NOTES EXPLANATORY OF LETTERING (OTHER THAN THE SYMBOLS 

 IN THE INDEX) ON THE GEOLOGICAL MAPS. 



By G. Sweet, F.G.S. 



FUAGEA (Plate 3). 



A. Several projecting bosses of upst.anding rocks are seen here ; all those which could he tested were 

 found (except in the case of a few breccia pinnacles) to be Ponfc^. 



B. Pontes block in situ, 1 feet by 4 feet 6 inches by 4 feet high : its top level with high water ; lies 

 close up to the base of the sand beach. 



C. Perceptible increase of the admixture of nullipore on this side compared with the south end of the 

 lagoon side. 



D. Several cocoanut, pandanus and other trees are being undermined and falling here. 



E. NuUipore sandstone dipping 9° E., composed of practically the same material as the present beach 

 just here, and now undergoing erosion. 



F. The material composing this island is made up chiefly of foraminiferal sand, in which Tinopoms 

 haculufus predominates with small fragments of nullipores, some being Halimeda, The top is undulating, 

 especially on the ocean side. 



G. Very few worn coral fragments and but very little breccia, 



TEFALA (Plate 4). 



A. These Pontes bosses arc apparently in situ, 



B. This island, like Fuagea, is formed of sand and frao;mental. It is essentially a sand island which 

 has shifted lagoonwards, as shown by the dip and nature of the sandstone. 



C. Sandstones cover over the breccia and Poritrs, both showing through in places. 



1). Pontes in great numbers about here, 1 foot 6 inches to 3 feet above platform, piercing the breccia. 

 These are somewhat like those at Falaoingo but are not quite so large. 



E. Small fragments of new coral abundant here. 



F. No breccia or rarely any, and but few small pieces of old, but numerous pieces of new coral up to 

 3 inches and over. 



FALAOINGO (Plate 4). 



A. But little IMiopora seen here in breccia, 



B. Big bosses of Pontes here in situ up to 3 to 4 feet above high water. 



C. The water had floated a cocoanut here, which had grown 18 inches in height and 15 inches of root 

 since I was first here (two months previously). 



D. Much drifted pumice up to 8 inches by C inches. Few and small cocoanut trees. 



E. Pontes piercing the breccia. 



F. Channel at high tide. 



