ON THE NEW RAILWAY-CUTTING AT GUILDFORD. 599 
41. On the new Rattway-Corrtine at GuinpForD :—The PLEISTOCENE 
Sanps and Drirt-GRAvets observed there. By Lieut-Col. H. H. 
Gopwin-Avustaen, F.R.S., F.G.8., dc. With Intropucrory 
Norzs on the Kocrnz Buns, by W. Wuiraxer, B.A. Lond., F.G.S. 
(Read May 28, 1884.) 
1. London Clay, Woolwich and Reading Beds. 
In December 1880 the following note of the southern end of the 
cutting on the Main Line just north of Guildford station was taken, 
the eastern side having been recut to widen the line :— 
Basement bed of the London Clay. Brown loam and clayey sand, with 
scattered flint pebbles, resting irregularly on the bed below, the junction 
falling northward. 
Clay shell-beds, weathering to a brown 
clay at the outcrop ... Krom less than 1 foot to 3 feet. 
Very dark grey clay with dark crimson 
PARLE AUN OM oes is.cio1daioin'o sas ata. ntoavcovsaeels ees about 8 feet. 
Grey clayey sand or sandy clay ............ 2 feet Reading beds. 
Dark plastic clay, with signs of bedding. 
This occurs only at the end of the 
cutting on account of the northerly 
SEM elo aie e = 5jn12 6 sn'eieja eos Snisaiving'enicis oc several feet. ) 
Light grey clay mottled of a deep crimson : feet or more. | Woolwich and 
| 
This section, though not so clear as it was when fresh cut, is still 
well displayed, and the shell-bed is very distinctly seen. 
This cutting was described long ago by Prof. Prestwich*; but 
the details of the Woolwich and Reading beds may be useful for 
comparison with the section on the other side of the valley. 
The new cutting north-east of Guildford, on the Guildford and 
Surbiton direct Line, now in process of formation, is of great 
interest, not only as showing a thick mass of drift, resting very irre- 
gularly on the Chalk, but also as again opening up the Reading 
beds, which are so rarely seen in this neighbourhood. It begins 
near the eastern end of King’s Road (Stoke road), and in a sharply 
curving course cuts the London road just north of Alderney Place, 
and then runs roughly parallel with that road to the south of Oak 
‘Lodge; so that it is about a mile long. 
Owing to the northerly dip the Hocene beds occur only at either 
end, the central and deeper part of the cutting being more to the 
south, and showing only chalk beneath the drift, the thickness of 
which latter, moreover, may have some effect in carrying the 
boundary-line of the Hocene beds to the north. 
At the western end, near King’s Road, there is clay, which must 
be London Clay ; for about 35 yards from the road a little of the 
* Quart. Journ. Geol, Soe. vol. vi. p. 201 (1850), 
