226 DR. G. J. HINDE. 



(270). Length 30 millims. A lump of hard, greyish-white, compact rock, rounded hy drill, with 

 fragments of Codoria and of another Astrsean coral and Lithothamnion. 



(271). Length 80 millims. Core cylindrical, of hard, mostly compact limestone, like preceding, with 

 casts of Pocillopara and Madrcpora. Greater part of core of encrusting Lithothamnim and consolidated 

 fragmental materials, cemented by ealcite. Ampliistegina. 



(272). Length 75 millims. Cylindrical core, like the preceding. Casts of Madrepwa, the branches in a 

 vertical position, and PodUoponi. Li some of the corals the wall structure is now replaced by crystalline 

 ealcite, whilst the parasitic borings are infilled by consolidated mud. Larger part of core of detrital 

 material with A mphisiegina and Lithothamnion, also Serpula. Turbinate gastropod, 30 millims. in height and 

 36 millims. in basal width, the walls replaced by crystalline ealcite, the exterior encrusted b}' Lithothamnion, 

 and the interior filled with hardened sediment. 



(273). Length 60 millims. Cylindrical core of hard, whitish rock, porous in places, Focillopom casts, 

 Hatoinitra (?), the wall structure replaced by ealcite. The greater part of the core of hardened detrital 

 materials with Amphiste(jina and LWiothainnion. 



(274). Length 43 millims. Cylindrical; rock similar to preceding. P(«7/o/w/'« in part as hollow casts, 

 in part with the walls replaced by ealcite, piece of Astrsean coral, Prionustra'a (?) Core mainly of hardened 

 detrital materials [666], principally broken fragments of foraminifera and Lithothamnion, in fine sediment 

 cemented by ealcite. Carpenieria, Pohjtreura planum, (li/psina, Amphistcgina. 



(275). Length 100 millims., diameter 55 millims. Cj'linflrieal, caveinous where branching PociUopora 

 and Madrt'poya have been dissolved. The larger part of the core of detrital materials, like the preceding. 



(276). Length 78 millims. Cylindrical; whitish hard rock, cavernous where PocUlupom and gastropods 

 have been removed. 



(277-280). Four pieces of cylindrical cores, total length 181 millims., of whitish, haixl, in part 

 cavernous limestone, with casts of I'orillopora. The cores consist largely of detrital materials with 

 foraminifera and Lithotltamnion. 



(281-283). Thi'ee irregular cores with a total length of 142 millims., of hard, white limestone, cavernous, 

 with casts of PociUopora, Madr/pnra, and turbinate gasti'opods. Detrital materials as in precechng. 



(284). Length 75 millims. Cylindrical ; hard, greyish-white limestone, cavernous, casts of Cwtoria. A 

 microscopic section [G67] shows that the rock mainly consists of thick encrusting layers of Lithothamnion, 

 alternating with Poli/tretiM planum. Fragmental materials in fine sediment with alcyonai'ian spicules, 

 Carpcnteria, Polytrema /niniaceiun, Gypsinu, and Ainplndcgina. 



(285-289). Five pieces of cylindrical and irregular cores, with a total length of 227 millims. Whitish, 

 hard limestone, similar to preceding ; cavernous, where corals have l)een removed, compact and dense where 

 Lithothamnion occurs. Pocillojiura, common ; Culoria and another Astrajan coral, rare. Lithothamnion, 

 abundant. The details of the fragmental part of the rock are only distinguishable in microscopic sections. 



Samples of loose materials brought up by sand-pump; they consist of angular and blunted small 

 fragments of white hard rock. Only a few specimens of Amphisicgina with rough surfaces, and chance 

 fragments of coral, are recognisable under a lens. 



Depth from Surface, 546-555 feet; Distance Bored, 9 feet; Total LengtJi. of Core 

 Obtalnecl.^ 10 inches; Numbers of Cores, 290-296. 



The cores, mostly cylindrical, are of wliitish and whitish-grey hard limestone with 

 cavernous hollows in places. Other portions are of compact, dense rock which consists 

 largely of Lithothamnion. The corals, for the most part, have disappeared, only an 

 Astrsean and casts of some perforate coral have been recognised. Fragmental 

 materials and fine sediment with foraminifera form a large part of the cores. The 



