20 
THE GEOLOGIST. 
Description of Strata passed throv^h in sinking an artesian well 
at the Surnj Count?/ Lunatic Asyluniy at Springfield, Wandsworth. 
Feet. In. 
Yellow clay intermixed witli veins of sand . . 30 0 
London clay, witli large clay stones . . . 211 0 
Sand, with clay and shells .... 66 
Dark sand . . . , , . . ,40 
Shelly rock, ....... 50 
Brown ssnd 1 6 
Sand and Clay 2 0 
Mottled Potters's Clay . . . . . .40 
Sand and Clay 2 0 
Dark sand and shells . . . . . .50 
Pure light colored sand . . . . ► 10 
Dark Sand ........20 
Sand and cky ....... 10 
Pink and yellow mottled clay . . . . ,40 
Light Brown and white clay .... 40 
Dark red and white clay 4 0 
Chalk and pebbles . . , . . . 10 
Greensand ........ 3 0 
Variegated green and bTOwn-sand ... 60 
Green sand ........40 
Brown sand, wherein was water, which rose to within 
36 feet of the surface ..... 50 
Fine dark gray sand 33 0 
Sand and pebbles from which water rose to within 28 
feet of the surface ..... 20 
A hard stratum (uncertain) . . • . .06 
Chalk 16 
Phnts 4 0 
Lnpiclgc, Assoc. I. B, A. 
Tgtal . 347 0 
