— 
Xvi Proceedings. 
place, and to the Blackheath Pebble Beds at the latter. The 
occurrence of allophane here is recorded for the first time. 
In’ ‘Memoranda chiefly on the Drift Deposits,” from the 
manuscripts of Sir J. Presrwicu, there is a reference to sections 
at Clapham and Wandsworth Commons.* 
“The Problem of the Water Supply ’’t notices a new well at 
Camberwell, with a section of the beds passed through, which 
particular well gave occasion to paragraphs in many papers. 
In a paper on ‘‘ New Borings round London,”} E. A. Marrin 
notes one Surrey section, which, however, had been already 
printed in our Transactions. If our members have any new 
information of this sort, I hope that they will let us have it, or 
will let me have it, as I have a third paper on Surrey Wells on 
the stocks. 
1899. 
In my Presidential Address to the Geological Society, I alluded 
to some experiments of Dr. Klein on Thanet Sand from Bed- 
dington, which show that this sand, as a filtering material, is 
highly bacteriocidal.§ 
In his ‘‘ Analysis of the Genus Micraster,”|| Dr. A. W. Rows 
has made a very important contribution to the paleontology of the 
Chalk, especially from an evolutionary point of view. Although 
the specimens on which it is based do not come from Surrey, the 
reasoning is applicable to our Chalk. The object is to show 
that, ‘‘from the zone of Rhynchonella Cuvieri to the upper part 
of the zone of M. coranguinum, we can trace an unbroken 
continuity in the evolution of Micraster.” All our collectors of 
Chalk fossils should read this paper. 
W. P. D. Sressine’s account of an ‘‘ Excursion to . . . Walton- 
on-the-Hill and Betchworth,’’™ gives some further particulars of 
the new railway cutting (see 1898), and of the pinnacles of chalk 
that extend up into the Thanet Sand. The Betchworth pit, in 
Middle and Lower Chalk, is also noticed. 
An ‘‘ Excursion to Reigate,’’ described by Miss CrosrreLp,** 
notes a junction of Gault and Lower Greensand, a pit in Upper 
Greensand, and a deposit with recent species of shells. 
A. M. Davies, in treating of ‘‘The Base of the Gault in 
Eastern England,” refers to three places in our county.}+ 
* Geol. Mag., dec. iv, vol. v, p 407. 
+ The London Argus, March 5, p. 389. 
t Science Gossip, n. ser., vol. v, p. 118. 
§ Quart. Journ. Geol. Soc., vol. lv, pp. Ixxvi, lxxvii. 
|| Ibid. pp. 494-547, pls. xxxv—xxxix. 
“| Proc. Geol. Assoc., vol. xvi, pt. 3, pp. 155-157. 
** Tbid., pt. 4, p. 162. 
tt Geol. Mag., dec. iv, vol. vi, p. 159. 
