PROCEEDINGS OF GEOLOGICAL SOCIETIES. 



409 



rocks with quartz-rock and crystalline limestones — possibly tlie altered equi- 

 valents of the Carboniferous sandstones and limestones of southern Spitz- 

 bergen. 



2. "On the so-called Wealden Beds at Linksfield." By C. Moore, Esq., 

 E.G.S. 



The author recognized a similarity of appearance between the shales and 

 thin limestone-beds at Linksfield and those of the Bone-bed series (at the base 

 of the Lias) at Pylle Hill, near Bristol, at Aust Passage and at Penarth, on 

 the Severn, and at the Uphill cutting on the Great Western Railway. The 

 author pointed out some close lithological resemblances, and stated that he 

 recognized the " white has," the "Gotham marble," the "bone-bed," and the 

 gypseous clay-bands of the south m the quarry at Linksfield. Cj/prides, 

 EstAeria, remains of Hyhodus, Lepidotiis, Acrodus, and Plesioscm^'us, Mi/tilus, 

 Modiola, TJnio, and Cyclas, from the Linksfield beds, were among the palseonto- 

 logical evidences supporting his correlation of the beds in question. 



April 18, 1860. 



1. "On a WeU-section at Bury Cross, near Gosport." By James Pilbrow, 

 Esq. In a letter to the Assistant-Secretary. 



This well, which was dug to a depth of one hundred and ten, and bored two 

 hundred and twenty-one feet deeper, appears not to have penetrated the 

 Bracklesham series of sands and clays, many of the characteristic fossils of 

 which, obtained from the well, were exhibited by Mr. Pilbrow, together with 

 specimens of the beds perforated. The yield of water in this well is very 

 copious, certainly equal to five hundred thousand gallons at about seventy feet 

 from the surface. When not pumped, the water rises to about nine feet from 

 the surface. 



2. "On the presence of the London Clay in Norfolk, as proved by a boring 

 at Yarmouth." By J. Prestwich, Esq., E.G.S. 



In 1840 Sir E. Lacon and Co. commenced a weU, for the supply of water to 

 their brewery, and had a shaft dug to the depth of twenty-two feet, and then a 

 boring made to the depth of five hundred and ninety-seven feet, entering the 

 Chalk, but stopped by massive flints. The work was unsuccessful ; but the 

 specimens of the strata were carefully preserved : Mr. Prestwich and Mr. Rose 

 lately examined them, and the following is Mr. Prestwich's opinion of the strata 

 that they represent : — blown sand and shingle, about fifty feet ; recent estuarine 

 deposits (with Ostrea edulis, Cardium edule, Corbula Nucleus, Tellina Balthica, 

 T. planata, Cyprina Islandica, Pecten opercularis, Mytilus and Balams), one 

 hundred and twenty feet ; London Clay, three hundred and ten feet ; Wool- 

 wich and Reading series, forty-six feet ; Chalk, fifty-seven feet. 



This section is interesting as being illustrative of the estuary and its filling 

 up ; and of the extension of London Clay and Lower Tertiary deposits to a 

 more northerly point than had previously been ascertained. 



3. "On some Eoraminifera from the Upper Triassic Clays of Chellaston, 

 near Derby." By T. Rupert Jones, Esq., E.G.S., and W. K. Parker, Esq., 

 M. Micr. Soc. 



Bluish-grey specimens of the mottled clay from the pits at CheUaston, three 

 miles south of Derby, whence the alabaster is obtained, yielded abundance of 

 minute Foraminifera, a few Entomostraca ( Oijthere ), some Otolites, and spines 

 and plates of small Echinoderms, together with fine siliceous sand and pyritous 

 granules. Of the Eoraminifera nearly one-half consist of a small variety of 

 Rotalia repanda, namely, R. elegans, D'Orb. The next most numerous group 

 are the Nodosarintje, including varieties of Nodosaria, Dentalina, Marginulinai 

 Fagimdina, Plamlaria, Frondictdaria, Flabellim, and Crutellaria, The genus 



VOL. III. 8 F 



