APRIL 1906. 



No. 591 



(No. 369 of current series) 



A MONTHLY ILLUSTRATED JOURNAL OF 



NATURAL HISTORY FOR THE NORTH OF ENGLAND. 



EDITED BY 



T. SHEPPARD, F.Q.S., 



The Museum, Hull ; 



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., 

 Prof. P. F. KENDALL, M.5c., F.G.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 : — Yorkshire Roman Remains, Work for 1906, The York Museum, 

 Dr. H. C. Sorby, F.R.S., British Woodlice, East Coast Erosion, Groynes and Sea 

 Defences, Water Supplies of Yorkshire, Birds as Head-gear 



The Weather and the March High TiA<ss—W. H. Wheeler, C.E 



Marine Beds in the Coal-measures of Yorkshire— I^a/coi Gibson, B.Sc, F.G 



LImaaia peregra monst. slaistrorsam, in Durham — C. T. Trechmanu, B.Sc 



Notes on Sinistral Shells of Llmaaea peregra—J. W. Taylor 



The Fossil Plants of the Yorkshire Coal-measures— IK. Cash, F.G.S. 



Cordierite in the Metamorphosed Skiddaw Slates— .4 //> erf Marker, F.R.S. ... 



Classification of Alien Plants According to Origin— r. IV. IVoodhead, Ph.D. 



Yorkshire Diatoms in 1905— Af. H. Stiles, F.R.M.S. 



In Memorlam, John George Goodchild 



Field Notes 



Reviews and Book Notices (Illustrated) 



Northern News (Illustrated) 



Jllu:>trations 



Platte IX.. X., XL, XII. 



Iff, 115, 120, 



F.L.S. 



123, 127. 131 



103-109 

 110-111 

 112-113 

 113-114 

 114-115 

 116-120 

 121-123 

 124-127 

 128-129 

 130-131 



109, 132 

 133-134 

 134-136 



133, 136 



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