128 
secretary's report. 
in the Coxwold-Gilling faults. There is no Dogger on each 
side of this faulted zone, and the Cornbrash, usually one of the 
most persistent rocks in Britain, is also wanting in the Coxwold- 
Gilling area, and in addition the Oxford Clay, which is a most 
obstinately persistent rock, can be traced as far south as White- 
stone Cliff, and then only reappears south of the Coxwold faults. 
This evidence may point to subsequent movements of these 
parallel faults. 
Professor Kendall then mentioned the chief lines of evidence 
by which he was led to fix a line along the western slopes of 
the Hambledon Hills for the obstruction of the drainage by 
the Vale of York glacier, and the formation of marginal lakes 
and their drainage channels. Referring to two overflow channels 
in the Kirkby Knowle area, he pointed out the evidence for 
a readvancement of the ice towards the close of the glacial 
period. This, he explained, quite corroborated evidence obtained 
in Cleveland, Lincolnshire, and on the eastern side of the Pennine 
Chain. Mr. Hall, of Thirsk, explained that glacial boulders 
had been found at considerably higher elevations than the 
channels mentioned. The discussion was continued by the 
Chairman, Messrs. Hastings, Carter, Johns, Ashworth, Hawkes- 
worth, and Stather. 
A heart}^ vote of thanks to Mr. Turton for presiding, and 
to Professor Kendall as lecturer and leader, was passed on the 
proposition of Rev. C. T. Pratt, seconded by Mr. E. Hawkes- 
worth. 
On Saturday morning the party drove to Low Kilburn, 
getting splendid views by the way of the precipitous face of 
Roulston Scar and the well-known " white horse " on its flank. 
The outline of that interesting physical feature, Gilling Gap, 
formed by two parallel east and west faults, was plainly seen. 
The evidence for the northerly of this pair of faults was sought 
in quarries on the flanks of Snape Hill, Corallian Limestones, 
with ammonites, being well shown on the southern or down- 
throw side, and the Upper Lias in another quarry a little to 
the north of the northerly fault, giving a downthrow to the 
south of 600 or 700 feet. From the top of Snape Wood a mag- 
nificent view was obtained of the grand escarpment of the 
