Page:Transactions of the Geological Society, 1st series, vol. 4.djvu/287

XV. Description of a series of Specimens from the Plastic Clay near Reading, Berks: with Observations on the Formation to which those Beds belong.

By the Rev. WILLIAM BUCKLAND,

member of the geological society,
and professor of mineralogy in the university of oxford

[Read 6th January, 1816.]

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CONTENTS

Description of Beds of the Plastic Clay formation above the Chalk at Reading.
Extent of this formation of Plastic Clay.
Appearance of the same near London.
Sections at Woolwich, Lewisham, Blackheath, Plumsted, and New Cross.
Other localities of this formation in the London Basin.
Appearance of the same on the coast of Sussex.
Sections near Seaford and Newhaven.
Plastic Clay near Arundel.
Connection of beds of the Plastic Clay formation in England with the French beds of the same era.
General character of the Plastic Clay formation in England.
History of the formation of the Marsh Lands immediately below London.

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Having an opportunity to visit Reading in July, 1814, I collected a series of specimens numbered as below, which I beg leave to present to the Geological Society. The pits whence they were obtained are at the Catsgrove Hill Brick kilns, distant about half