222 DR. G. J. HINDE. 



preceding. It is a very fine grained sediment of the same character as Core 230. Mr. Chai'MAX 

 recognises, in a microscopic section [658], fi'agments of Te.duhiria, Pulvmulina, Orhitulik's, Caijienteria, 

 and Pohjtrcma inininccnin. 



Depth from Surface. 468-4:80 feet ; Distance Bored, VI feet; Total Length of Core 

 Obtained, 6 inches; Numbers of Cores, 234-23G. 



Only three pieces of solid core with a total length of (5 inches were ohtained from 

 this 12 feet of the boring. The rock is whitish, moderately hard limestone, with 

 numerous slit-like hollows, the empty casts of some organism, possibly ILdimeda- 

 joints, and with occasional small cavities where corals may have been dissolved out. 

 One piece of the core is compact to minutely porous, and consists of very tine sediment 

 with detrital fragments. The loose materials broken up l)y the drill, consist of angular 

 and blunted chips of white rock with a few i^i&iiicheA AmpJdstegina, alcyonarian spicules 

 (rare) and echinid plates. 



Details. 



(234-). Lengtli -50 millims. Core cylindrical, -with some cavities ]n'()l)al)ly due to corals, since Clionn 

 borings are present in them. Hock mainly fragmental in appearance, onl\' (.h-hifnlilcs to be seen 

 under lens. 



(23.5). Length 4-5 millims. Cylindrical core of the same character of rock as picccding. 



(236). Length 44 millims. Core lonnded by drill, of whitish rock. A microscoinc section [659] shows 

 that it is fine calcai-eous sediment with minute detrital fragments of organisms. The oidy recognisable 

 bodies are casts of small echinid spines and small pieces of LitholliainnUm. 



Dejitli from Surface, 480-487 feet ; Distance Bored, 7 feet ; Total Length of Core 



Obtained, 0. 



Only loose small chips, subangular and partially rounded, ofwliite and cream-tinted 

 rock, were obtained from this 7 feet of the boring. The l)roken grains range from 

 0"5 millim. to 4 millims. in diameter. No organisms are seen tinder a lens beyond a 

 chance alcyonarian spicule. 



Depth from Surface, 487-497 feet ; Distance Bored, 10 feet; Total Length of Core 

 Olitained, \ foot 1 inch; Numbers of Cores, 237-241. 



The solid cylindrical cores are of a whitish or cream-tinted calcareous rock, fairly 

 hard, cavernous in places, compact to porous. It contains casts o\' Madrepxn-a in poor 

 preservation. There is a considerable amount of Lithotliamnion. The greater part of 

 the cores consist of a very tine consolidated calcareous sediment with foraminifera ; 

 echinid spines are also common and some Ilalimcda-^oints. Gastropod casts. The 

 materials are cemented by calcite. 



Details. 



(237). Length 37 millims. Lump of whitish, hard, porous rock, rounded by drill ; apparently of fine 

 sedimentary material. The only organisms recognisable under a lens are casts of Madrqi 



IIUIV. 



