4 
Mr. W. Whitaker on sume Surrey Wells. 45 
Mitcham. Rubber Chemical Works, Seringa Mills. 1900. 
Made and communicated by Messrs. Leeranp and Surcuirr. 
Water-level 47 feet down (October). 
Thickness Depth 
MOLE Re cohasee cost apiasenetane coc beses Saece0p dec ess beqestemenmenneeey 1} 4 
| River Gravel. | aa Sealgees Varcnenaas See OR ae Reet 13 143 
lue clay and septaria ............06+ 1104 125 
as ree : { Bine one clay ieee 10 135 
a feet. | dandy clay and pebbles ...........2+5 11 146 
DOM ETOCKE | coc. ccccicessesnccccctospasmaudas 1 147 
. Black clay and shells ..............00+6 13 160 
Bioch wig) 2nd Bhiak A ARRAS 10 170 
5A feet eee Neamid cand! SHOU: vétiatecancgecdeceentead 2 172 
; Mottled clay ............sscsccsessserseees 18 190 
Hard sandy clay and pebbles ...... 10 200 
PAGS AMM eee tment onstecc tec cwesatasedocseckatceseSccesene 33h 2334 
Ciralistan dH tsiecaiuds tecswedesestscvac nse coves veneversalecsle ee 674 301 
Nunhead. T’rial-boring, for the Southwark and Vauxhall 
Water Co. 1897. 
Communicated by Mr. J. W. Bestuzr, the Co.’s Engineer 
(and from specimens). 
110 feet above Ordnance Datum. 
Thickness Depth 
FT. IN. FT. IN. 
OU esas setae cesta seaace se ne eee sain shiniecetviecweeeeetcsdsusedes 1 6 1 6 
Yellow ha) clay, clay-stones 
(septaria) Sinchesthick at base 11 8 18 2 
Yellow (brown, rather sandy) clay 110 15 0 
Yellow (brown) clay, with clay- 
| stones 6 inches thick at base... 8 6 23 6 
Yellow (brown and partly grey) clay, 
with clay-stones (septaria) a foot 
thick at base .......ccsscssesseeeeees 23 25 9 
[London Clay.]~ Yellow (brownish-grey) clay (with 
selenite in upper part)............ 5 5 31 0 
Blue (grey and brownish) clay ...... 40 6 71 6 
Blue clay (grey sandy, 
with green grains) 
[Basement } and stones (flint peb- 
bed] DICH) Anaioanstceven ees 3 6 75 O 
Blue sandy clay (grey 
[ clayey sand,hard)... 2 6 7 6 
