JUNE 1906. 



No. 593 



(No. 371 of current aeriea) 



A MONTHLY ILLUSTRATED JOURNAL OF 



NATURAL HISTORY FOR THE NORTH OF ENGLAND. 



EDITED BY 



V T. SHEPPARD, F.Q.S., 



The Museum, Hull ; 



AND 



T. W. WOODHEAD, Ph.D., F.L.S., 



Technical College, Huddersfield ; 

 with the assistan'ce as referees in special departments of 



J. GILBERT BAKER, F.R.S. F.L.S., 

 Prof. P. F. KENDALL, M.5c., F.Q.S., 

 T. H. NELSON, M.B.O.U., 



GEO. T. PORRITT, F.L.S., F.E.S. 

 JOHN W. TAYLOR, 

 WILLIAM WEST, F.L.S, 



Contents : — 



Notes and Comments: — Unconformity in the Northumberland Coal-measures, 

 Survey Maps of East Yorkshire, Lepidoptera Illustrating Melanism 



The Use of Maps in Botany — VV. G. Smith, Ph.D 



The Permian Salt Lake — Cosmo Johns, M.I.Mech.E., F.G.S 



The Plant Cell: A Historical Sketch— /4g-ues Robertson, D.Sc 



Notes on Sections in Gravels near Doncaster (Illustrated) — Geo. Grace, B.Sc 



New and Rare Yorkshire Mosses and Hepatics — W. Ingham, B.A 



Abnormal Immigration of Fieldfares—//. B. Booth 



Yorkshire Naturalists at Ingleton (Illustrated) •. 



List of Papers and Monographs — D 

 Baker's North Yorkshire 



Field Notes 



Reviews and Book Notices 



Northern News 



Illustrations 



//. Clifton Sorby, F.R.S. , etc. 



PAGES 



Geological 



169-170 



171-173 



176-17S 



179-1S3 



184-186 



187 



188 



189-193 



194-197 



198-199 



183, 193, 199-200 



186 



... 187, 188, 200 

 ... 184, 185, 189 



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