Circular 236. 
Yorkshire Naturalists' Union. 
lPre6it)cnt ; 
JOHN W. TAYLOR. Leeds. 
Divisional Sccretari? : 
J. W. STATHER, F.G.S., Brookside, Newland T'ark, Hull. 
1bon, Secretaries : 
T. W. WOODHEAD, Ph.D.. F.L.S . Technical College, Huddersfield. 
W. E. L. WATTAM, 30 Towngate. Newsome, Huddersfield. 
1bon. treasurer: 
H. CULPIN, 7 St. Mary's Road, Doncaster. 
THE 236TH MEETING 
WILL BE HELD AT 
FOR THE INVESTIGATION OF THE COMMON, 
ON 
SATURDAY, MAY 4th, 1912. 
RAILWAY ARRANGEMENTS.— Through return tickets at pleasure 
party rates will be issued at all stations on the G.C., G.N., H. & B., L. & Y,, 
L. & N.W., Midland & N.E. Railways, which have booking arrangements for 
RiccALL. to Members and Associates of the Y.N.U. surrendering the 
Certificate noted below. The Tickets will be issued on Friday, the 3rd, and 
Saturday, the 4th of May, and will be available for returning on Saturday, 
and up to and including Monday, May 6th, 1912. Where through bookings 
are not in operation, Members may book to the most convenient junction, and 
re-book to destination, the reduced fares being available for each stage of the 
journey. 
N.B.— The Railway Booking Clerks will only grant these reduced fares to Members 
and Associates producing a Special Certificate signed by one of the Secretaries of the 
Union. Members and Associates wishing tor this Certificate must apply to either of the 
Hon. Secretaries for it. At Stations on the N.E. and H. & B. Railways, tickets at the 
reduced fares will be issued on production of the signed card of membership. 
BOOKS AND MAPS.— The District for investigation is included 
in Sheet 206. six inch Ordnance Map, and the Geological Route in Sheet 63 
(93 N E.) one inch Ordnance Map, both this Sheet and the six inch Sheets 206 
and 207 are pubHshed geologically coloured, but the drift edition alone is of 
any use. Reference may be made to papers by Dr. H. F. Parsons on the 
Alluvial Strata of the Lower Ouse Valley (Proc. Y.G. and Pol. Soc. 1877) and 
on the "Trias of the Southern Part of the Vale of York ' (op. cit. 1879) by 
Prof. P. F. Kendall. M.Sc, F.G.S., on the " Glaciation of Yorkshire" (op. cit. 
1893; and by the Rev. C. D. Ash, M.A. on the " Lepidoptera of Skipwith " 
(Nat., March, 1895, p. 83, and March, 1896. p. 85) ; also Excursion Circulars 
No. 6 of 1879, Riccall Common, and No. 124, 1896, Skipwith Common ; also 
Robinson's " Flora of the East Riding of Yorkshire." 
HEADQUARTERS.— Hare and Hounds Inn. Riccall. 
ROUTES. — Riccall can be reached by rail both from York and Selby at 
convenient times. Mr. W. N. Cheesman. J. P., F.L.S. , Dr. W. J. Fordham. 
Mr. Wm. Ingham. B.A., and probably the Rev. C. D. Ash. M.A.. will act as 
guides. 
One or other of these gentlemen will meet the trains at Riccall Station 
which leave York at 9-27 a.m. and 10-30 a.m., due at Riccall at 9-46 a.m. and 
10-57 a.m. ; and leaving Selby at 9-13 a.m. and 10-25 a.m., due at Riccall at 
9-23 a.m. and 10-34 a.m. The members will commence work immediately on 
arrival, the Common being about one mile from the Station. The Rev. C. D. Ash 
