218 . r)K. G. J. HINDE. 



Piece of cast of an Astia;un coral Urhic/'lla (1) and Madreporu. Core principally of coral. Ainplmteciina 

 Litliotliamnion, and casts of gastropods. 



(202). From 373 to 378 feet. Length of specimen 80 millims., breadth 55 millims. Core cylindrical, 

 with imperfect casts of Astraean corals, Madrcpom nmterla, and Porifrs. Larger part of core of 

 Aiiiphistegina and Orhitnlitcit, with Lithofhaiirnion, in a fine sediment, now consolidated into hard rock. 

 Gastropods. 



(203). From 373 to 378 feet. Length of specimen 32 millims. Core cylindrical, generally similar to 

 preceding. Casts of PocUlopora and Madi-qmu. Foraniinifera very inimeroiis, the same as in No. 202. 



(204). From 373 to 378 feet. Length of specimen 68 millims. Cylindrical core, with imperfect cast of 

 Astrsean coral. Greater part of core consists of fine, calcareous sediment, with minute fragments of 

 foraniinifera and other organisms, and great numbers of Aiiiphistegina Lessonii, Orhifolifcs, Polyheuta 

 miniaceum, Cakarina, and Textuhria are also shown in microscopic section [651]. Echinid spines. Casts 

 of ascidian spicules. Nodular fragments of Lifhof/unnnin)). Organisms well preserved, except corals_ 

 Interspaces filled with calcite. 



(205) [652]. From 373 to 378 feet. Length 115 millims. Core cylindrical, 55 millims. in diameter, of hard 

 compact to porous rock, generally similar to preceding. Cast of Astrsean and of j\ladrcpuia. Structure of 

 coral dissolved, lint the infilled ])orings of Clioita and other organisms remain. Larger part of core consists 

 of foraminifera, which include, besides the predominant Auiphistcgina, Orhifolitcs, TruncatuJiiia, Poh/treind 

 miniaceum, P. planum, Gjipdnu, Calmrina, Carpenter ia, and Heterodegina. Ascidian spicules replaced by 

 calcite. 



(206). From 373 to 378 feet. Length 85 millims. Core cylindrical, rock similar to preceding. Cast 

 of Astrsean coral and Madirpfora cuntecta, OrJiitoJites, Atiiphidcgina, Lithothainnion. Casts of gastropods. 



Depth from Surface, 378-410 feet ; Distance Bored, 32 feet ; Total Length of Core 



Obtained, 0. 



This 32 feet of the boring is only represented by loose fragments, and powder of 

 the rock broken up by the drill. The rock is fairly hard, whitish to somewhat drab- 

 tinted ; very little can be seen in it with a lens beyond casts of PocUlopora and 

 perforate ceral, probably Porites, and a few foraminifera, belonging to Orhitolitesi, 

 Cnipenteria, Calcarina, Amphisteyina, and Iletcrostegina. 



Alcyouarian spicules, echinid spines, fragments of polyzoa, and casts of gastropods. 

 Pieces of Lithothamition. A microscopic section shows that the foraminifera, &c., are 

 embedded in sedimentary material, and cemented by calcite. 



Details. 



From 378 to 390 feet. The samples are of angular or partially rounded chips of rock, up to 12 millims. 

 across. Casts of Pocillupora rare, fragments of perforate coral ; Culrarina, Antphisteginu, gastropod casts. 



From 390 to 400 feet. The samples are of rock chips and powder-, partly white, partly of a drab tint. 

 Podllopora casts, fragments of perforate coral mnnerous, probably Porites. Alcyonarian spicules, fragments 

 of polyzoa, Aiuphisfeginu, echinid spines. 



From 400 to 410 feet. Coarse and fine materials intermingled [844] ; some of the Ijroken rock chips 

 are 12 millims. across. Fragments of perforate coral Porites {1) ; also numerous pieces of Pocillajwra. Some 

 of the chips of white rock are seen in thin sections to be composed of fine sedimentary material with 

 Amphistegiiia, Orbitulites, Varpenteriu, and small broken pieces of Lithuthainnioii. 



