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MESSRS. WHITE AND TREACHER ON THE [Aug. I905, 



These are distributed throughout the brown beds above. Like 

 the concretions noted in (A), which they closely resemble, they 

 have probably been formed in situ. 



The sandy layer, which in many places contains quartz and 

 flint-chips, and other adventitious matter introduced through 

 fissures from above, passes up into a yellowish- to greyish-brown, 

 firm, phosphatic chalk, resembling friable sandstone, with widely- 

 vspaced subrectangular joints, and a fine and exceedingly-complicated 

 banding or graining, suggestive of an original lamination all but 

 destroyed by the combined action of boring organisms and of dif- 

 ferential movements within the body of the rock. The glazed 

 nodules observed in the sandy seam are recognizable in these firmer 

 beds, but become decidedly scarcer towards the top. Impersistent 

 seams of yellowish chalk-pebbles are locally prominent in the lower 

 2 feet. 



Towards the top of the band the rock assumes a greyer tinge, 

 the fine layers, or stripes, of brown chalk becoming obviously 

 interspersed with others of lighter, yellowish or white, colour. 



As the salient microscopic features of this, and of the higher, 

 rich phosphatic band have been described by Mr. Strahan, it is 

 unnecessary to enter into further details. 



On weathered surfaces the rock is covered by a greyish sandy 

 coating, through which the more durable materials, such as the 

 nodules and fossils, project. 



The Lower Brown Chalk has yielded remains of the following 

 forms : — 



Pisces, (v. c.) 



Corax falcatus, Ag. (c.) 



Corax pristodontus (?) Ag. 



Lamna appendicidata, Ag. (v. c.) 



Odontaspis macrorhiza, Cope. 



iScapanofhynchas sp. ? 



Actinocamax verus, Miller, (e.) 



Inoceramus Cuvieri, Sow. 



Lima Hoperi, Mant, 



Ostrea hippopodium, Nilss. (r. c.) 



Ostrea semiplana, Mant. (c.) 



Ostrea vesicularis, Lam. (v. c.) 



Ostrea Wegmanniana. (c.) 



Ostrea spp. (?). (c.) 



Pecten cretosus, Defr. 



Plicatida sigillina, S. P. Woodw. (c.) 



Spondylus lotus, Sow. (c.) 



Teredo amphisbcena, Sow. (r. c.) 



Crania sp. 



Kingena lima, Defr. 



Bhynchonella rcedensis, Eth. 



Terebratulina striata, Wahl. 



Scalpellum fossula, Darw. 



Scalpellum maximum, Sow. 



.Serpula fluctuata, S. P. Woodw. (c.) 



Serpida plana, Sow. 



Serpula spp. 



Cidaris hirudo, Sorig. 



Cidaris sceptrifera, Mant. (c.) 



Cidaris serrifera, Forbes. 



Pseudodiadema (Halicodiadema) fra- 

 gile, Wilts. 



Echinocorys scutatus (fragments). 



Galerites alhogalerus (fragments). 



Micraster cor-anguinum, Klein, (r. c.) 



Bourgueticrinus ellipticus, Miller. 



Marsupites testudinarius, Schlotb. 



Uintacrinus sp. (c.) 



Asteroidea. (r. c.) 



Pentagonaster megaloplax, Sladen. 



Porosphara globularis, Phil. 



Coscinopora infundibuliformis, Gold!'. 



Ventriculites decurrens, T. Smith, (c.) 



Ventriculites infundibuliformis (?) 

 S. P. Woodw. 



Nodosaria Zippei, Eeuss. 



Uintacrinus is represented by detached plates and brachial ossicles, 

 mostly obtained from the sandy layer at the bottom of the band. 

 The highest plate found was situated 2 feet 3 inches above the 



