of Lhc London Clay. 467 



one occasion, has most kindly and readily afforded me infor- 

 mation on subjects connected with my scientific pursuits. In 

 my cabinet are two NautiU, brought from the Isle of Sheppey 

 by J. S. Bovverbank, Esq., which appear to belong to the new 

 species, but Mr. Sowerby, having examined them, considers that 

 they are not sufficiently perfect to stale that they do so with 

 certainty. It was in the year 1833 that I first discovered the 

 minute cephalopodous MoUusca in some masses of clay which 

 I had brought from a well on Hampstead Heath. This led 

 me to a further examination of the clay in other spots, when 

 I again met with them in the clay and on the surface of some 

 pieces of iron pyrites. Of one species I found several attached 

 to the whorls of Vermelus. bognoriensis. Another species has 

 several spines projecting from different parts of the outer 

 surface, which I have not seen in any of theGrignon shells. 

 The President of the Geological Society, in his Anniversary 

 Address *, mentions that Mr. Lonsdale, in arranging the col- 

 lection of the Society, had found "that our common white 

 chalk, especially the upper portion of it, taken from different 

 parts of England (Portsmouth and Brighton among others), 

 is full of minute Corals, Foraminifera, and valves of a small 

 entomostracous animal, resembling the Cytherina ol Lamarck. 

 From a pound of chalk he has procured, in some cases, at least 

 a thousand of these fossil bodies. They appear to the eye like 

 white grains of chalk, but when examined by the lens, are seen 

 to be fossils in a beautiful state of preservation." 



Edward Charlesworth, Esq., F.G.S., in an able paper on the 

 Crag Formation, published intheLondon and Edinburgh Piiilo- 

 sophical Magazine for August 1835, gives an extract of a letter 

 I'eceived from Searles Wood, Esq., of Hasketon, near Wood- 

 bridge, in which it is stated that his cabinet contains fifty species 

 of minute cephalopodous MoUusca of the order Foramiiiif era, 

 D'Orbigny, which belong to the lower division of the crag. 



Among the donations to the museum of the Geological 

 Society in 1835, is the following: SpiroUnitesf in chalk ffints 

 Irom Stoke near Chichester, presented by the Marquis of 

 Northampton, F.G.S. 



The shells of the most rare occurrence (at the railroad) 

 are Phasianelln, Toniatclla, Cypvcca ovi/brmis, Cnrdinm ni- 

 tais, Fectuiiculus decnssatus, and Conus concinniis. The most 

 abundant, are Rnstdlaria lucida, Fusiis intcryuptusX, and Na- 

 tica glaucinoides. 



* Address to the (Jeolo^icy.l Society, di-livcied at tlic Aniiiversaiv, on 

 the 19tli of February \>i'.\G. by (Jharles I.ycli, Jiin., Ksq , President. Pro- 

 ceedings of the Geolouical Society of London, p. ."{(i.^. 



+ Proceeiiing.s of the Geological Society ol London, vol. ii. \). .'HI. 



X A well-known Ihirton bhcll. 



3 K 2 



