INDEX. 



327 



Dicranograptns, 48 

 Didymograptiis, 47 

 Diplograpttis, 47, 50 

 Dissolution of spicules, 1 1 

 Ditrupa, 173 



Dudley limestone corals, 73 

 Dumfriesshire, graptolites of, 49 



E 



Earliest trilobites eyeless, 184 

 Echinodermata, inter-relations of 



different forms, 107 ; their young 



condition, no; structure of, 144, 



146 ; of fossil, 147, 149 

 Echinozoay 105 

 Echinus, 109 

 Eglwyseg corals, 87 

 Eifel Mountains, crinoids in, 126 

 " Encrinital limestone," 118 



marble, 120 



Encrinite, description of an, 112 

 Encrinites, 98 ; zoological position 



of, 99 ; living, 107 ; abundant, 



115, 118, 120, 121, 122, 124, 



127, 128 



effects of muddy water on, 115 



Primary, 115 



vSecondary, 128 



Encrinus moniliformis^ 128 



Eozoon Canadense, 28 



Estheria, 202 



Etheridge, Mr., on sponges, 19 ; on 



Frodtcchis, 233 ; on Ammonitida;^ 



317 

 Euplectella aspcrgillum, 1 1 

 Eutypterida, 201 



Fascictilaria atiraiititim^ 221 

 Favosites, 79, 82, 84 

 Feather-star, 107 

 Felixstowe, fossil lobsters at, 207 ; 



fossil shells at, 278 

 "Fire-stone," 25 

 *' Five-fingers " star- fish, 132 

 •' Flint-meal," 20, 23 



Flint nodules, formation of, 34 



Flints, sponges in, 20, 23; encri- 

 nites on, 123 



Fossil cephalopods, 296 ; folk-lore 

 of, 296 



worms, 158 



Fossils, abundance of, 3 ; doubtful 

 classification, 14 ; popular names, 

 26 



Foraminifera, 28, 29 ; in carboni- 

 ferous limestone, 30 ; in white 

 chalk, 30 ; to prepare, 50 



Fusulina limestone, 29 



Fusus contrarius^ 289 



Gault echinoderms, 153 



fossils of, 263 



Gasteropoda^ differentiation of, 242 



Girvan, corals at, 82 



" Glass-rope " sponge, 18 



Glyptocrinus, 124 



Goniaster, 132 



Goniatites, in Yoredale shales, 116, 



Gonothecfz, 41, 42, 44 



Graptolites, 38 ; zoological position 

 of, 40 ; structure of, 42 ; abun- 

 dant at, 50, 51, 52, 53 ; in shales, 



54 



GraptohthttSy 47 



Gravel flints, sponges in, 27 



Greensand echini, 153 



fossil mollusca of, 263 ; lo- 

 calities for, 264, 265 



sponges in, 19, 25, 26 



H 



Hafod, corals at, 88, 89 

 Halysiies, 78, 79, 84 

 Hampstead beds, fossils of, 276 

 Heliolites, 62, 78, 81, 82, 83 

 Hexactinellida:, ii, 12, 23, 24, 25 

 Hinde on -sponge spicules, 19 . 

 Hopkinson on graptolites, 40, 41, 



46 

 Hunstanton, corals at, 94 



