208 DR. G. J. HINDE. 



greyish-white Hmestone, and consist principally of Madrepora with the interstices 

 _of the coral filled up solid, and some pieces of Pocillopora. Some of the smaller 

 pieces of rock are of consolidated foraminifera and fragmental materials, including 

 alcyonarian spicules, stellate spicules of ascidians, and Lithothaninion. The 

 foraminifera belong principally to Orbitolites, Carpenteria, Polytrema, Tinoporus and 

 Amjjhistegina. The sample of fine grained material consists, as usual, largely of 

 angular chips of whitish rock with a few scattered specimens of foraminifera, 

 frequently fragmentary ; they include Gypsina vesicularis, Nonionina umhilicata and 

 Amphistegina Lessonii. 



Details. 



(130). Length 127 millims. Cylindrical core principally of a massive Madrepora, the corallites mostly 

 filled up with sclerenchyma. Forillopora. Consolidated fragmental material with foraminifera and 

 polj'^zoa. 



(131). Three rolled nodular pieces of core, with a total length of 73 millims., consisting of fragments 

 of Madrepora similar to the preceding. 



(132) [634]. Length 32 millims. An irregular flattened piece of hard rock consisting of consolidated 

 fragmental materials with an Astrsean coral, a fragment of alcyonarian stem referred to Lohophytuin, 

 numeious foraminifera, mentioned above, stellate spicules of Leplodiaum and gastropoda. Nodose 

 Lithothaninion. The spicules of Lohoplujtnni, viewed in transveise sections under the microscope, have a 

 very similar appearance to fibrous radiating oolitic grains ; they show delicate fibres radiating from an 

 axial line, and sometimes concentric growth lines. The spaces between the spicules are filled with fine 

 sediment. The fragmental materials are cemented together by calcite. 



(133) [635]. Length 75 millims. Cylindrical core of hard grey rock, consisting of Madrepora. The 

 coral interstices partially filled with sclerenchyma, the borings in it with line mud or radiating prisms of 

 "conchite." Polytrema planum partly orergrows the coral. Orhitolitex. 



(134). Sample of loose fragmental materials, with foraminifera, also with alcyonarian spicules, echinid 

 spines, polyzoa, and small ovoid coprolitic pellets. 



Deptli from Surface^ 140-150 /eei; Distance Bored, 10 feet ; Total Leugtlt of Core 

 Obtained, b inches ; Numbers of Cores, 135-137. 



The only solid cores from this 10 feet of the boring are three rounded pieces of 

 grey, dense, hard, coral rock, apparently Madrepora sp. The remaining 9 feet 

 7 inches of the boring consists, according to Professor David, of " sand " or fine 

 rubble. 



Details. 



(135) [636]. Length 55 millims. Rounded core of Madrepm-a sp. similar to that in Core 133. The 

 interstices of the coral are for the most part infilled with sclerenchyma, calcite, or prisms of " conchite." 

 Coral partly overgrown with Polytrenm p)lanum. Carpenteria and AnqMsteginu present. 



(136) [637]. Length 32 millims. A nodular piece of the same coral as the preceding. 



(137) [638]. Length 33 millims. A cylindrical core of the same Madrepora as the two preceding, and 

 in the same state of preservation. 



