Proceedings. xi 
Though Dr. J. W. Grecory’s paper, ‘‘ The Evolution of the 
Thames,’’* is of a general character, and contains no special 
reference to Surrey, yet, as we have a share in that river, we 
are concerned therewith. 
1895. 
T. LeieHron’s paper, ‘‘The Lower Greensand... of Kast 
Surrey,’’+ which deals especially with the Hythe Beds and the 
Sandgate Beds, is of importance both for the details given and 
for the conclusions drawn from these as to the classification of 
the beds. 
He concludes (1) that the chert-beds at Leith Hill and to the 
west have been eroded south of the escarpment southward of 
Dorking ; and that, ‘instead of a lithological change from east 
to west,’’ as had been supposed, there is one ‘‘from south to 
north, from deep-water beds to shallow”; (2) ‘‘that at the base 
of the Folkestone Sands an area of pebbles...can be traced... 
from Leith Hill to Tilburstow Hill, the pebbles becoming smaller 
. eastward’’; (3) ‘‘ that the Lower Greensand of this area con- 
sists of beds formed in a marine estuary or shallow sea,’’ and 
‘that no correlation with beds at Hythe and Sandgate is possible.” 
He thinks that there are ‘‘ groups of beds developed locally 
throughout this area,” as follows:—l. ‘The Fuller’s Earth 
Beds . . . between Reigate and Tilburstow Hill.’ 2. ‘The 
chert-beds of Leith Hill and... to the west,’ in two divisions. ~ 
3. ‘©The clayey sands... south of Dorking.” 4. ‘‘ The iron- 
sands which overlie the Atherfield Clay ... throughout... the 
district.” 
The Chert-beds of Leith Hill and the Pebble- and Chert-beds 
east of Dorking are described in detail, with a useful digression 
to the Fuller’s earth in the latter case. A comparative table 
of sections (six compilations) from east of Dorking to east of 
Bletchingley is given, and a summary of the author’s conclusions. 
‘The paper itself should, of course, be studied by our geologic 
members. 
Dr. J. W. Grereory, in his account of an “ Excursion to Chil- 
worth,” * gives a map of the neighbourhood of Woodhall, of like 
kind to that of 1894, but on a larger scale, introducing ‘“ Chert 
Series’’ between the Pebble Beds and the Lower Sands, and 
omitting the Bargate Stone, which has disappeared. 
In the notice of an ‘‘ Excursion to Betchworth and Headley,’’§ 
H. W. Moncxror treats of the Eocene outliers, of the sands of 
doubtful age, but later than Eocene, of the gravels, and of the 
clay-with-flints. 
* Nat. Sci., vol v, p. 97. 
t+ Quart. Journ. Geol. Soc., vol. li, pp. 101-124. 
¢ Proc. Geol. Assoc., vol. xiv, pt. 3, pp. 120-124. 
§ Ibid., pp. 124-128, 
