Deposits in the Valley of the Ttiames. 539 



lot observed any i 

 ion. 



Weimar, Aug. 2Uh, 1838. 



as I have not observed any striking constancy in their tints 

 or distribution. 



Art. JV. — On the Deposits containing Carnivora and other Mam- 

 malia in the Valley of the Thames. By John Morris, Esq. 



The valley of the Thames contains, in many parts, an old 

 alluvial deposit, from which considerable quantities of brick 

 earth are obtained, not only on the banks of the river itself, 

 but also along the courses of those streams which empty them- 

 selves into it. In this deposit are found, rather abundantly, 

 the bones of Mammalia associated with extinct and recent 

 freshwater shells ; those of more common occurrence belong 

 to the Ruminantia, Pachydermata, and Rodentia, but recent 

 researches have produced from this deposit remains of Carni- 

 vora, as the bear, hyaena, &c, which have generally been con- 

 sidered as belonging only to cavern-deposits; they have been 

 chiefly noticed in the following localities. 



The strata at Brentford were first described in a paper by 

 Mr. Trimmer, to the Royal Society, in 1813, and consist as 

 follow ; — in the first field half a mile north of the Thames, 

 surface twenty-five feet above low water : — 



Sandy loam, lowest 2 feet calcareous 6 to 7 feet. 



Sandy gravel, Shells and bones, afewinclies. 



Calcareous loam, Bones of ox and deer with shells 1 to 5 feet. 



A layer of peat here and there intervenes between this stratum and the 

 next below. 



Gravel, (sand and clay intermixed) 



Teeth and bones of two species of elephant \ 



- of hippopotamus L 2 to 10 feet. 



- of ox J 



The second field is one mile west of the former, one mile 

 from the Thames, and a quarter of a mile east of the river 

 Brent ; height above the Thames, forty feet. 



Sandy loam, slightly calcareous 8 feet. 



Sand becoming coarser towards lower part, and ending in sandy gravel. 

 Teeth and bones of hippopotamus abundant \ 



: : : ::f£!::::::::::::::::: k*' 



- of ox, with shells j 



Sandy loam, highly calcareous, varying in thickness, 



Bones of ox and deer, with shells ,...1 to 7 feet. 



Gravel and clay not dug into in this field. 

 Vol. II.— No. 22. n. s. 3g 



