346 PLEISTOCENE GEOLOGY OF THE THAMES VALLEY. 



ft. in. 



10. Blue clay, with shell of Aftodon, etc., together with the 

 remains of mosses and other plants. The lower portion of 



this bed contained a great deal of limonite. Nothing to . . 9 



11. Finely laminated, fissile, and mottled clays, containing bones 

 of Cerviis, Bos, etc., and shells of Anodon and Unto in places. 

 Many nodules or concretions of " race " occur throughout 

 this division. The bottom portion was saturated with 



water. .. .. .. .. About 12 o 



The upper surface of the Laminated Clay series (No. 11) 

 and the under surface of the Blue Clay (No. 10) are seen to be 

 polished and striated — the striae running to the N.E. by E. 

 This feature evidently owes its origin to movement between the 

 two beds, which, of course, means slipping. 



The fine sections formerly exposed in the great brickyards 

 which extended from Grays to Little Thurrock appear to have 

 been first described in detail by Prof. J. Morris in 1836 although 

 Buckland, Parkinson, and Trimmer undoubtedly had some 

 knowledge of them. Only one of these fine sections now 

 remains, viz., that at the Globe pit, but as these exposures 

 have so often been described, we have contented ourselves by 

 giving full reference to the literature concerning them in our 

 Bibliography of important works on the district. 



V. PALEONTOLOGY. 



Grays Thurrock is famous for the fine series of organic 

 remains that have been obtained from the various sections 

 formerly exhibited in the district. In the present part of the 

 paper we have given a full list of the fossils and have described 

 the remains upon which the new records are based. 



MAMMALIA. 



{a.) L ist of Species — 



Homo sapiens (Implements) 

 Macacus pliocenus, Owen. 

 Canis lupus, Linn. 



,, vulpes, Linn. 

 Fells catus, Linn. 



,, leo, Linn. 

 Hysena crocuta, Erxl. 

 Lutra vulgaris, Erxl. 



