noted below. Tickets taken on Friday, August 4tb. will be available for return on 
Tuesday, Aug. 8th. Where through bookings are not in operation Members may 
book to most convenient junction, and re-book to destination ; the reduced fares 
being available for each stage of the journey. 
N.B.— The Railway Booking eierks will only grant these reduced 
fares to Members and dissociates producing a Special Certificate 
signed by the Secretary of the LInion. Members and Associates 
wishing lor this Certificate must apply to Mr. Sheppard for it, 
and must enclose a stamped directed envelope and their current 
card of membership of the LInion, which latter will be returned 
with the Certificate. 7\t stations on the N.E. Rly. tickets at the 
reduced fares will be issued on production of the signed card of 
membership. 
BOOKS AND MAPS.— The whole area is included in Sheets 93 S.E. and 
94 S.W. of the One- Inch Ordnance Map, which may be obtained geologically 
coloured. See Programme No. 106 (1893), which may be had from the Hon. Sec, 
price 2d.; also "The Geology of the country between York and Hull " (Geol. 
Survey Mem.) 1886 ; also the "Naturalist" for 1885, pp. 307-309. 
THE DISTRICT to be investigated includes the western escarpment of the 
Yorkshire Wolds, and a portion of the \'ale of \'ork, which is a broad and ancient 
valley excavated in the soft sandstone and marls of the Permian and Triassic Series. 
On the western side, the valley is bounded by the gentle dip slope of the Magnesian 
Limestone, whilst its eastern boundary is sharply defined by the bold escarpments 
of the Jurassic and Cretaceous rocks. Prof. Kendall has recently pointed out that 
the features of the solid geology of the neighbourhood of Market Weighton and 
Pocklington are of " unique interest and importance." He remarks that " Market 
Weighton lies uj^on the prolongation of the faulted anticline which forms the 
northern boundary of the Yorkshire Coalfield to the North of Leeds. The 
disturbance was initiated in the interval between the deposition of the Middle Coal 
Measures and that of the Permian. No definite signs of Post Permian movement 
can be detected in the Triassic rocks of the Vale of York, as they are concealed 
beneath a nearly continuous mantle of su])erficial deposits, but the Jurassic and 
Cretaceous rocks of the East Riding show signs which cannot be mistaken of 
an intermittent movement by which, either by default of deposition or by frequently 
repealed erosions the rising arch was deprived of all the Jurassic Series with the 
exception of an attenuated representative of the Lower Lias. In like manner the 
Neocomian rocks fail to be rejiresented, except by a few pebbles, and the Red 
Chalk rests directly on Lower Lias. The hiatus is filled in the coast sections from 
Speeton northward by a series of Jurassic and Neocomian beds, upwards of two 
th ousand feet in thickness, and this will be the measure of the relative uplift of the 
Market Weighton axis since Triassic times, but before the deposition of the Chalk. 
Tlie disturbed belt extends as far north as Kirkham Abbey, and its prolongation 
I'astward under the Chalk is proved by the fact that a well at Iluggate passed from 
Chalk into strata yielding the \\ell-known A;/njio)iites anuiilaris.'''' 
ROUTES. — Sa'I URDAY : Start from Nunburnholme Station on the arrival of 
the 9-47 a.m. train from York, and work round to Pocklington via Warter and 
Wharram Percy. Monday : Leave Pocklington on arrival of the 10-18 a.m. train 
from \'ork and Leeds, and examine the district around Great (iivendale and 
Millington. 
PERMISSION to visit their properties has been kindly granted by Lord 
Londesborough, Lord Merries, Mr. Charles H. Wilson, M.P., and Major-General 
Duncombe. 
HEADQUARTERS.— The Feathers Hotel. Terms: bed, breakfast, dinner, 
sandwiches and attendance, 6/- per day. Early application should be made to 
Mrs. Nicholls for rooms. 
