284 



THE GEOLOGIST. 



at this spot is somewliat singnlar, no flinty clialk occurring at a less 

 distance tlian six miles to tlie north or east, and the grey chalk rising 

 between that member of the Cretaceous gronp and the " bone- 

 deposit," and forming the highest gronnd of the whole district. 



The calcareous marl would appear to have been derived chiefly 

 from the waste of the chalk, the marl possessing all the usual mineral 

 characters of such sediments ; a microscopic investigation con- 

 firms this view, the marl abounding with Fommimfera and other 

 microscopic organisms, many forms of which are immediately recog- 

 nized as ordinary species of the chalk. 



The following are the cretaceous fossUs which have been detected 

 in it : — 



Terebratula rigida. Single cells, ovoidal and globula, = Oo- 



Verneuilina tricarinata. linae (?) and portions of otlier Forami- 



Textularia globosa, troclius, and others. nifera. 



PolymorpMna (?). Prismatic fragments of Inoceramus. 



Buliinina variabilis and anotlier. Fragments of Echinodermata. 



Eosalma. Ossicles of Apiocrinites. 



Globigerina cretacea. Valves of Cytberella ovata and C. trun- 



Cristellaria rotulata and anotlier. cata. 



RotaKa globosa. Bairdia snbdeltoidea and B. Har- 



Nodosaria. risiana. 



Cytbere Hilseana. 



LIST OF THE ORGANIC REMAINS FROM THE " BONE BED." 



Mammalia. Megaceros Hibernicus. 



Elepbas primigenius. Eqnus. 

 Hippopotamus major. Hysena spelaea. 



Rhinoceros bemitoecbus. Ursus ?. 



Bos j)rimigenius. Shells. 



lu'us. . Helix nemoraKs. 



longifi'ons. concinna. 



Cervus elepbus. 



We have now fairly got back to Folkestone, and if we make the 

 best of our way towards Copt Point, through London- street, we shall 

 pass a good example of the superficial brick-earth spreading over 

 gault and green-sand. I point out this section as, although fimited 

 in extent, the little patch of gault there exposed is rather rich in that 

 very elegant and somewhat rare ammonite, A. Boucliarcliauus. 



(To he continved.) 



