^7 



S AUB. 1003 



AUGUST 1908. 



No. 619 



fJVo. 397 «/ current t^riei) 



A MONTHLY ILLUSTRATED JOURNAL OF 



NATURAL HISTORY FOR THE NORTH OF ENGLAND. 



EDITED BY 



T. SHEPPARD, F.G.S., F.S.A.Scot., 



The Museum, Hull ; 



AND 



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



Technical College, Huddersfield. 



WITH THE assistance AS REFEREES IN SPECIAL DEPARTMENTS OF 



J. GILBERT BAKER, F.R.S. F.L.S., GEO. T. PORRITF, F.L.S., F.E.S., 



Prof. P. F. KENDALL, M.Sc, F.G.S., JOHN W. TAYLOR, 



T. H. NELSON, M.B.O.U., WILLIAM WEST, F.L.S. 



Contents : — 



PAGES 



Notes and Comments :— Diaposematism, or Reciprocal Mimicry, Two Theories of Mimicry ; 

 The Bearded Tit, Peculiar Markings; The Darwin Celebrations, Dr. A. Russell 



Wallace; New Names for Old Animals, Priority v. Use ... 293-296 



Unrecorded Cephalopods from the Yorkshire Oolites— Henry Charles Drake, F.G.S. ... 296-297 



Mollusca at Brafferton— H^. Denison Roebuck, F.L.S 298-299 



Footprints in a Yorkshire Sandstone (Illustrated) 300-301 



Hornsea: Its Mere and Coastline (Illustrated; 302-310 



A Trio of British and Alien Plant Lists— F. Arnold Lees, M.R.C.S., etc. 311-319 



Field Notes ... ... ... 299, 319-320 



Reviews and Book Notices ... 321-822 



Northern News 299, 297, 323-324 



Illustrations 300,302,303 



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