lvi Proceedings. 
with lowness of water is gone into in detail. Measles go the 
other way, and apparently whooping cough. 
I may be allowed to notice a Report as to the future source of 
Water Supply, made by myself to the Corporation of Croydon, 
and printed in vol. xiii. of their Records (pp. 103-110). 
1900. 
Anon. Some Deep Borings in London.* 
Notes eleven borings in Surrey (of three of which, however, 
details had been published), with the thickness of the various 
geologic formations passed throngh, tle water-level, and the yield. 
In a paper on ‘*‘ Upward Boring for Water,’’ an anonymous 
writer describes a ‘‘ Proposed Scheme for Reigate and Redhill.” t 
The geologic features of the district are described, with their 
effect on water-supply. 
‘here are old quarries and underground workings in the Upper 
Greensand. As the beds dip northward these underground gal- 
leries get to lower levels in that direction, and ‘‘ extend beneath 
the great chalk water systew.’’ The water in the Chalk being 
held up by the clayey Chalk Marl, it is suggested that ‘‘ at any 
point in the tunnels water can be at once obtained by the simple 
process of boring upwards through the roof.” 
The idea is ingenious, but I fear that to carry it out might be 
found a less simple matter than is supposed. I should not like 
to be one of the boring party, not being partial to shower-baths. 
It should be remembered, moreover, that a site near the escarp- 
ment is not one where a large area of Chalk can be put under 
contribution, and therefore not one where a large supply can 
be got. 
When the writer compares this scheme with what has been 
done at Folkestone Waterworks, we must note a difference. At 
Folkestone the supply from Chalk springs has been increased 
by driving galleries in the Chalk which are nearly horizontal 
(rising but slightly northward, or against the dip) into the 
Chalk, from the base of the escarpment. From these borings 
have been carried up some twenty-five feet, much less than 
would be needed in the Reigate case, in which, moreover, the 
galleries are in Upper Greensand. 
Geologic sections at both places are given, to explain in the 
one case what is proposed, and in the other what has been done, 
and there are other figures of geologic interest, from photographs. 
Analyses of Reigate Water and of water from Margery Hall 
are given, the latter to show the quality of the proposed supply, 
the former to show the need of it. 
* Science Gossip, n. ser., vol. vii, no. 78, p. 186. 
+ Water, vol. 2, no. 19, pp. 256-265. 
