280 DR. Ct. J. HINDE. 



and a large amount of branching and fragmentary Litlntthawjiio}!. The materials are 

 cemented by crystalline dolomite. 



Details. 



(491a-494a) [798]. Total length .503 millims. Greyish, speckled white, hard, minutely porous. With 

 the single exception of a small perforate coral, perhaps Bliuh-cpura, the cores are uniformly composed of 

 foraminifera and fragments of branching Lithofhaiiinim, with alcyonarian spicules and echinid spines. 

 The foraminifera include Orliifolifrs, common, Tcrtiiluria, Carprnffvyt, Calnirvnu, Foli/trrma niiniacevui, P. phinuin, 

 Amphistegina, abundant, and Hcfcrn.'^ff'gina, common. The interspaces lietween these organisms are only 

 partially filled with crystalline dolomite. 



(495a, 496a). Total length 277 millims. Greyish, speckled, hard and porous. Somewhat more than 

 half the cores consist of coarse fragmental materials with Orhitoliti'x, A mphiategina, and Hcferosfcrirna, the 

 remainder is composed of casts of V(cIona and Mailn'pora rontcrfa (V). The former is bored by Liflioiloiinn^. 

 Echinid spines and branching Lithofhamnkm. 



(497a). Length 442 millims. Gieyish-white, hard, compact to minutel}' porous. Beyond casts of a 

 few simple forms of an Astraean coral and a specimen of Maclrfipora ronf/rfa {1), the core consists of the 

 same foraminifera and other org.anisms as in the preceding, with the addition of Carjwntcria and casts of 

 gastropods. » 



(498a-501a). Total length 379 millims. Greyish-brown, with whitish undulating bands, hard, cavernous. 

 Very crystalline. The cavities in these cores were probably occupied originally by corals, and corals likewise 

 appear to have been in the solid portions of the rock now filled in with crystalline dolomite and surrounded 

 by encrusting layers of LifJtotltainnion. Indications of Matlrcporu. Foraminifera as in preceding. (Mnfolitcx 

 abundant, Polyfrevia and Amphistegina. Echinid spines. 



(.502a-504a) [799]. Total length 326 millims.? Greyish-brown, hard, compact to porous, very crystalline 

 rock. With the exception of two or three small casts of corals, too imperfect for determination, the cores 

 appear to be entirely of foraminifera and fragmental Lithothaninion, alcyonarian spicules and echinid spines. 

 Orhifolifcs, Gi/psinu, Poli/treina, Amphistegina, and Heterostegina, can be recognised in the microscopic section. 



(505a-507a). Total length 229 millims. Mottled greyish-brown, haid, compact to porous, in places 

 cavernous. Large amount of the banded crystalline deposit lining and filling the hollows. Imperfect 

 casts oi MiuJrtpom (vnfcda. Small Milhpont. FMcmsting Pol iilrniiu phtn inn and Li/lioflutuinion. Orhitolifcs, 

 Amphistegina, echinid spines. 



Depth from Surface, 991-1006 feet; Distance Bored, 15 feet ; Total Length of Core 

 Obtained, 12. feet 8 inches; Numbers of Cores, 508a- 527a. 



Solid cylindrical cores of greyish -white to greyish -brown, dense, hard, dolomitic 

 limestone. Compact to porous, with occasional cavities where corals have been 

 removed. Banded crystalline deposit lining and filling up the pores and hollows. 

 Corals are distributed throughout the cores, but they do not occupy so much space as 

 the foraminiferal and detrital materials. They belong to Stylophora, Pocillopora, 

 Seriato'pora, Cceloria, Astrwa, Orbicella, Cyphastrcea (?), Prionastrcea, Ftmc/ia, 

 Madrejiora, Monti'pora (?) and AstrcBopora. Millepora fairly common ; Lobophytum 

 and detached alcyonarian spicules are also present. The foraminifera belong to 

 Orbitolites, Carpentaria, Gypsina, Polytrcma, Ainpthistegina, and Heterostegi'iia. 

 Echinid spines, Serpula-tuhes. Casts of lamellibranchs, and encrusting and branching 

 LitJiothamnion. 



