REPORT OX MATERIALS FROM THE B0RINC4S AT FUNAFUTI ATOLL. 205 



(102). Sample of finely granular detrital materials consisting principally of small angular chips of coral 

 rock, triturated liy the drill ; amongst these HcUffpora raruJca and perforate coral structure can he 

 recognised with a lens ; the foraminifei'a include OrbUoIifcs coiujilanata, Tinoporm hafiilatm, Amphidegina 

 Lessmiii and Heterosfegina dcpressa. Aleyonarian spicules, echinid spines, and Halimeda. 



(103, 104). Total length 105 millims. Two irregular nodular lumps of Por.iUopora sp., similar to the 

 form in Core 100, showing in places the surface characters of the coral. Numerous joints of Halimeda 

 are cemented to the coral. 



(105) [630]. Length 35 millims. A nodular lump of Orbicella heliojwra. The structiu-e of the corallum 

 is fairly well preserved, the interstices, in part empty, in part infilled with radiating crystals of "conchite," 

 calcite, or with white hardened mud, containing stellate spicules of Lcptodinum. 



(106). Length 30 millims. An irregular fragment of Pocilloiwra. 



(107). Length 23 millims. A small nodule of hard white coral rock, showing perforate structure, 

 probably Poritex. 



(108). Sample of granular fi-agmental material, similar to that of Core No. 102. The angular chips 

 appear to be mainly of coral rock, pieces of Heliopora ra^i-idca are present. Of the foraminifera, 

 Mr. Chapman has determined, Miliolina crrciilafis, one specimen, Pohjtrcma miniacciui), rare, Anipliistegina 

 Leiisoiui, Heterosfegiita depresm. Also aleyonarian spicules and echinid spines. 



Depth from Surface, 100-110 feet; Distance Bored, 10 feet; Total Length of Co7'e 

 Obtained, 7 inches; Numbers of Cores, 109-115. 



The solid cores in this 10 feet of the boring are only represented by a few rounded 

 fragments of whitish or cream-coloured limestone, with a total length of 7 inches. 

 These fragments are principally of corals : Poc'dlopora, Fungia {?), Astrcea, Madrepora, 

 and Montipora. The coral structure is preserved. One piece of the rock is of fine 

 organic sediment with foraminifera, Leptoclinum stellates, &c., cemented into hard 

 rock by calcite and prismatic crystals of " conchite." The greater part of the core, as 

 shown by samples, consists of coral rock now broken up into minute fragments by the 

 drill, with a small proportion of foraminifera, aleyonarian spicules, echinid spines, &c. 

 In one sample minute chips of the greenish Heliopora ccerulea are present. 



Details. 



(109). Sample of loose materials, mainly small angular chips of coral rock, often stained a rusty tint by 

 the iron of the drilling apparatus ; some cliips of Heliopora, Amphistegina Lessonii, echinid spines and 

 aleyonarian spicules. 



(110) [516, 517]. Length 32 millims. by 48 millims. A rounded irregular nodule of fairly hard white 

 rock with roughened surface ; it is composed of detrital mud with numerous foraminifera, a fragment of 

 Fungia (?) and other organisms. The foraminifera include Orhitolites, Carpenteria, Polytrema planum, Gypsina, 

 and Amphistegina. Spirorhin, stellates of Leptoclinum, LitkotJuimnion. 



(111) [518]. Length 33 millims., l)readth 22 millims. A small round nodiale of hard white coral, 

 apparently a piece of Axtnea, with the minute structure well shown. The septal interspaces lined with 

 prismatic crystals of " conchite," or partly filled with calcite and detrital sediment. 



(112). Length 66 millims.' A cylindrical core mainly of a massive Mad/repora, the corallites largely 

 infilled with sclerenchyma, (tc. At base, detrital mud with Amphistegina, now cemented into hard 

 white rock. 



