653 
(No. 437 of ourrent series). 
~ 
A MONTHLY ILLUSTRATED JOURNAL OF 
NATURAL HISTORY FOR THE NORTH OF ENGLAND, 
SRO E NS rs ae 
EDITED BY 
T. SHEPPARD, F.G.S., F.R.G.S., F.S.A.Scot., 
THe Museums, Hutt; 
~—— |. 
AND 
T. W. WOODHEAD, Ph.D., F.L.S., 
TECHNICAL CoLLEGE, HUDDERSFIELD. 
5 WITH THE ASSISTANCE AS REFEREES IN SPECIAL DEPARTMENTS OF 
2 an es 
J. GILBERT BAKER, F.R.S. F.L.S., GEO. T. PORRITT, F.L.S., F.E.S., Y 
Prof. P. F. KENDALL, M.Sc., F.G.S., JOHN W. TAYLOR, ee 
pti T. H. NELSON, M.B.O.U., WILLIAM WEST, F.L.S., 
; ; RILEY FORTUNE, F.Z.S. > 
E Contents :— $ 
¢ PAGE >: 
_ Notes and Comments:—The Vandalism of Collectors; The Value of Collections ; Bradford (2 
: Philosophical Society ; The Wonders of Filey _... Ah f ... 209-210 ‘ 
_ A new species of Unio from the Yorkshire Estuarine Series; - ‘with Notes on nailee i - 
% forms (lIllustrated)—J. Wilfrid Jackson, F.G.S. ... ~~ oF « 211-215 : 
% A Century’s Changes in the Sheffield District Flora—C. F. enncone x. oes =. 216-221) 4) 
_ The Chemistry of some Common Plants—P. (. Keegan, LL.D. of ty ... 222-994 
_ Extinct Animals of East Yorkshire—T. Sheppard, F.G.S., F.R.G. s. PS At (Scot) v1» 225-2300 
Some Mosses new to the West Riding, etc,—C. A. Cheetham ... Ae at ‘a Syke OBT25a eee 
“bie Naturalists at Harewood Park—T.S.© 200 ne ke 988-286 a 
Field Notes... ... Bea ihm, san aS act. pclae Ee 210, 224, 232, 237-238 ; 
_ Reviews and Book Notices Saexs : se! 5 Pe aes aes et Tog dutiees «.. 239-240 Aes 
Proceedings of Provincial Scientific Societies ak V iuake Ma SS s BA ras CEN once eR eee 215 ‘ 
Northern News CEE PS ae SOM 2) ACen eee Smee Seo, egeee eae ices if f aieh Seton ead 230 — % 
Plate XIV. : 
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