144 



PROCEEDINGS OF THE GEOLOGICAL SOCIETY. 



Feet. 



Brought forward 76 



, Basement-bed of J b. Shelly rock 1 



the London Clay. \ a. Sand 1 



" j. Light clay 2 



i. Q,o\o\xre(i c\a.y {Mottled clay) 7 



h. Dark red clay ( ditto ) 3 



g. Bluish clay 3 



11. Woolwich and \ f. Black clay 7 



Reading Series, \ e. Sandy clay 3 



Afifeet. 



III. Thanet Sands, 

 39 feet. 



d. Oyster shells 3 



c. Pebbles 2 



b. Green sand 9 



Pebbles in green sand 1 



Light sand with water 38 



Flints 1 



157 



Chalk 100 



It 



263 



Well-section, Hoxton. 



(Mr. R. W. Mylne.) 



Feet. 



Made earth and gravel 18 



London clay 69 



rtr 1 ■ T. J ic. Mottled clay 16 



II. Woolwich and , n i ui 1 1 i j • j 



„ ,. c . Jo. Pebbles, black and green, mixed 



Kr'*' with sand : 10 



^ ' la. Green sand 8 



III. Thanet Sands. Black sand 30 



To the Chalk 151 



Well-section, New City Prison, Holloway (^from inspection of spe- 

 cimens in the possession of Mr. Bunning). 



Feet. 



London Clay 135 



f «. Mottled clay about 22 



Woolwich and 

 Reading Series, 

 61 feet. 



III. Thanet Sands. 



Coloured sands ,, 5 



g. Yellow sand „ 2 



f. Clayey green sand „ 6 



e. Yellow and greenish sands „ 8 



I <?. Pebbles and green sand „ 6 



I c. Saud and brown clay with traces of 



vegetable matter „ 7 



I b. Dark green sand „ 6 



[_a. Sand with clay and pebbles ,. „ 7 



rSands.' .' 12? 



IFlints 1 



217 

 Chalk 102 



319 



I could not exactly make out from the specimens where the Chalk 

 begins in this section. The last Tertiary bed named is a. u., but as 

 that seems to leave a space unoccupied, I have inserted " sands " with 



