HERTFORDSHIRE NATURAL HISTORY SOCIETY. Ixvii 
General Section at Mr. Lines’ Brickyard (George’s Farm), near 
Bush Green, one mile E.S.E. of Hertford.* 
(Scale, 8 feet to an inch.) 
^ ® Mi [(w) Chalk.] 
— —. »•—— w.w I 
(a) Small pipes of gravel, in parts. 
\b) Thin wash of London Clay, with flints 
and pebbles, chiefly at the N.W. end. 
f - (e) Dark brown clay ; very little, and at 
the S.E. end only. 
(d) Basement-bed. Brown bedded sandy 
clay and (in lower part) clayey sand, 
with thin layers of clay. Green 
grains here and there, and small 
ferruginous concretions ... At the 
bottom a layer of black flint-pebbles 
(e) ........ , .about 12| 
[The above is a long section; its con¬ 
tinuation downwards is from smaller pits 
just below.] 
(/) Pale grey and brownish sand and clay, 
irregularly resting on, or passing 
downinto, very pale greenish ochreous 
clay (/') ......... 2 to 3 
(g) Pale lilac firm fine sand, thinning 
out at the N.W. . . . . . . I|to0 
(h) Purple, grey, red, and brown mottled 
clay, in parts sandy; passing into the 
bed below ......... 2 to 3 
(i) Pale grey sandy clay with some small 
flint-pebbles; passing into the bed 
below ..nearly 2 
(k) Light-grey sand streaked with brown, 
false-bedded; with an interrupted 
layer of small flint-pebbles close to , 
the top ......... 16 
(or more.) 
(1) Flints (some large) and flint-pebbles 
h in sand. 
* Whitaker, ( Mem. Geol. Surv.,’ vol. iv, p. 227, fig. 88. 
