460 



PEOCEEDINGS OF THE GEOLOGICAL SOCIETY. [Jnne 19, 



to the Acton gravels, is seen in the cross section of the valley which 

 passes through both places (fig. 5) . The outcrop of the London Clay 

 is here seen intervening between the two localities, separating the 

 high from the mid terrace. The surface in Brown's Orchard is 24 

 feet ; the stratification of the deposits is shown in Section I (fig. 6), 



Fig. 6. — Section I, in Mid-terrace Oravel, in Broivn's Orchard, 

 Acton Green. Surface 24 feet. 



13 ft. 





a. Surface soid, 1 ft. 6 m. to 2 ft. b. Mixed earth, 6 in. to 2 ft. c. Gravel, 6 in. 

 to 1 ft. 3 in. d. Sand with seams of red and white sandy clay, 8 ft. e. Black 

 seam. /. Gravel with bones. This cutting extended to within a foot or 

 two of the London Clay. 



consisting of : — Surface-soil, 1 foot 6 inches to 2 feet ; mixed earth, 

 6 inches to 2 feet ; gravel, 6 inches to 1 foot ; 8 feet of sand, with 

 irregular seams of red and white sandy claj^ ; a black seam of oxide 

 of iron or manganese ; 2 feet of gravel ; and at the bottom of all, in 

 close proximity to the London Clay (which, however, was not at- 

 tained in this section on account of the quantity of water lying upon 

 it), a thick layer of animal-remains, consisting of a variety of ex- 

 tinct animals, mixed together, and lying invariably at a level 12 to 

 13 feet from the surface ; the names of these, which through the 

 kindness of Mr. Busk I am enabled to give, consist of: — 



1. Rhinoceros hemitoechus. 



2. Equus caballus. 



3. Hippopotamus major. 



4. Bos taurus. 



5. Bison priscus ? 



6. Cervus clactoniensis, Falc. 



7. elaphus. 



8. tarandus. 



9. ■ Ursus ferox priscus. 

 10. Elephas priinigenius. 



A detailed account of these wiU be given by Mr. Busk. 



