JUNE 1910. 



No. 641 



(No. 419 of ourrint teries). 



A MONTHLY ILLUSTRATED JOURNAL OF 



NATURAL HISTORY FOR THE NORTH OF ENGLAND. 



EDITED BY 



T. SMEPPARD, F.Q.S., F.S.A.Scot., 



The Museums, Hull ; 



AND 



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



Technical College, Huddersfield. 



with the assistance as referees in special departments of 

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



Prol. P. F. KENDALL, M.Sc, F.O.S., JOHN W. TAYLOR, 



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



WILLIAM WEST, F.L.S., 



RILEY FORTUNE, F.Z.S. 



Contents : — 



Notes and Comments : — Yorkshire Species of the Hydracia niditans Group ; The Age of 

 Shrews; New Method of Mounting Coleoptera, etc. ; The Study of Spiders ; Distribu- 

 tion of Spiders ; Nottingham Fossils; The Large Larch Sawfiy ; And its Ravages 



neologrical Notes on the District north of Malham (Illustrated)— 



Cosmo Johns, M.I.Mech.E.,F.G.S. 



Results of Experiments on the Floral Colours— P. Q. Keegan, LL.D 



Plants of the Steep Holme— G. Claridge Druce, M.A., F.L.S. , ete 



Abnormality in Spiders {.l\\ustTated)—Wm. Falconer 



Keys to the Families, Genera and Species of British Spiders, etc.— Win. Falconer 



Glacial E\ldencea near tlarrogate— A. Leslie Armstrong, F.S. A. (Scot.) 



Field Notes 



Hayward's Botanist's Pocket Book — F. Arnold Lees 



News from the IVlagazines 



Proceedings of Provincial Scientific Societies 



Reviews and Book Notices 



Northern News 



Illustrations 



217-220 



221-224 



2:^5-226 



227-228 



229-232 



233-242 



243-244 



245 



246-247 



224 



225, 232 



■ ' 220 



248 



229, 243 



LONDON : 

 A. Brown & Sons, Limited, 5, Farringdon Avenue, E C. 



And at Hull and York. 

 Printers and Publishers to the Y.N. U. 



PRICE 6d. NET. BY POST 7d. NET. 



