284 DR. G. J. HINDE. 



(547a-550a). Total length 382 millims. Greyish to greyish-hrown, hard, cavernous rock. In the 

 lower half the cores are mainly of coral casts. Stylophora, PociJIoj>om, Madrcpora, Porifes, and Astrceopora. 

 OrhifolUcK, and A mplmlegina. Echinid spines. Lifliofhaiimion. 



(551a-553a) [806]. Total length 394 millims. Greyish-brown, in upper portion, cavernous, in lower, 

 compact to minutely porous, dolomitic rock, very crystalline. It consists of corals and coarse detrital 

 fragments of organisms, all greatly ohscured. Casts of Sf//Iophara, PociUopm-a, Astrcva, (hinrclhi jildades, 

 Madreporo, and Porife.'<. Orliifolifcs, Gypnina inhfrrrnx, and AiDphixfi'f/ina. Echinid spines. Hnlimeda, 

 branching Lithotlianmimi . 



(554a, 555a). Total length 211 millims. Mottled greyish-white, miiuitely porous, with irregular hollows. 

 Chiefly of coral casts. Sfi/lojihom, large, Co'Joria, in position of growth ; Sideradnea (1), Porifcs. Somewhat 

 coarse detrital materials, with Orhifolift's, Polyfreina /ilanum, Ainpliixfrf/ina ; casts of lamelliliranchs and 

 turretted gastropods. Lifliofhanininn. 



(556a). Length 193 millims. Greyish-brown, partly compact, partly porous, with irregular hollows. 

 Largely of coral casts. Simple cylindrical Astrsean, I'drifc.^ tin'vosa, Mnvtiponi, Milhpom. Oylnfolifes, 

 numerous, PoJi/frenta plamiin, Aiiqdndfjpna. LUhofliaiiininn. 



(557a-559a). Total length 225 millims. Mottled greyish-white to b)own, cavernojiis. Largely of coral 

 casts. Cylindrical Astrjean, Finufiu, Madirpora, Monfipom or Porifcs. Corals overgrown by Poh/frcnin 

 pJanitiii. Detrital materials with Orhifolifcs, Gi/pxina, Aiiiphidcijina ; echinid spines, casts of lamellil)ranchs 

 and gastropods, and Lilhothainnion. 



(560A-561a). Total length 391 millims. Whitish to mottled greyish-white, porous, with irregular 

 hollows. The upper two-thirds consists of corals and coarse fragmental materials, the lower third prin- 

 cipally of finer detritus with some corals. Sfi/lojdiora, Pocillojiom, Asfnm, Madr/'pora, and Mnntipont. Coral 

 casts encrusted by Poli/lr/'nuipldiinin and fyifliiif/iiininitiii. Orhi/alif/'s, Citrpcnlcria, and .1 ni/diisfcjiiui. Casts of 

 lamellibranchs and gastropods. 



(562a-564a) [807]. Total length 277 millims. Whitish, hard, fine-grained, minutely porous, dolomitic 

 limestone, with occasional hollows. Numerous casts of I'orillopora, simple Astraean, and Montipara. A 

 microscopic section shows that the rock is chiefly a fine organic sediment cemented by crystalline dolomite. 

 It contains OrbHoIifrs, Tciinluria riiffoM, Carpcnferia, Piilviniilivu, (lypmui inharens, Polyfrciiia iiuniaceuvi, and 

 Ainphisfc(/iiM. Echinid spines. Small alcyonarian spicules. Lcpiodinum stellates. Fragments of 

 Lithothaiiinioii. Casts of gastropods. 



Bejyth from Svrfac(\ 1025-1084 /ec^ ; Distavce Bored, 9 feet ; Total Len</t}i of Core 

 Obtained, 8 feet 10 inches; Nvmhers of Cores, 5fi5A.-583Ai. 



Solid cylindrical cores of greyish -white to greyish-hrown, hard, dolomitic limestone. 

 The rock is in part porous, in part compact, and it is not infrequently cavernous or 

 with small irregular hollows where, as a rule, corals have heen partially destroyed. 

 In general characters the rock resembles that above ; many of the cores are largely 

 composed of coral casts and the areas between are filled with foraminifera and 

 somewhat coarse organic fragments which are cemented l)y crystalline dolomite. 

 With the exceptions of Funxjia and Siderastrd'a, which have not been o})served, the 

 same genera of corals occur as in the jireceding, the commonest forms being 

 Pocillopora, Cceloria, Orhicella, and Porites. Millepora and Lohopliytimi still 

 continue. Excepting Textvlaria and Pidmnulina, which were not observed, the 

 cores contain the same genera of foraminifera as those above, with the addition of 

 Heterosteyina, which is here very common. The detrital fragments are likewise the 



