WATKINS & DONCASTER 



NATURALISTS, 

 36, STRAND, LONDON, W.C. 



(Five Doors from Charing Cross), 



Keep In stock every description of 



APPARATUS, CABINETS, BOOKS, AND SPECIMENS 



for Collectors of 



BIRDS' EGGS, BUTTERFLIES, MOTHS, ETC. 



Catalogue (96 pages) sent post free on application. 



Issued Monthly, illustrated with Plates and Text Figures 

 To Subscribers, 6s. per annum ; Post Free, 6s. 6d. 



The Scottish Naturalist 



with which is incorporated 



"The Annals of Scottish Natural History " 



A Monthly Magazine devoted to Zoology 



Edited by William Eagle Clarke. F.R.S.E., 

 F.L.S., Keeper Natural History Dept., Royal 

 Scottish Museum ; William Evans, F.R.S E., 

 Member 0/ the British Ornithologists' Union; and 

 Percy H.Grimshaw, F.R.S.E.F.E.S., Assistant- 

 Keeper, Natural History Dept,, Royal Scottish 

 Museum. Assisted by J. A. Harvie-Brown, 

 F.R.S.E..F.Z.S. ; Evelyn V.Baxter, H.M.B.O.U. ; 

 Leonora J. Rintoul, H.M.B.O.U. ; Hugh S. Glad- 

 stone, M.A., F.R.S.E., F.Z.S.; James Ritchie, 

 M.A.,D.Sc. A. Landsborough Thompson, M.A., 

 M.B.O.U. 



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NATURALIST 



EYES 



FOR SALE. 8,000 to 10,000 pairs 

 BIRDS' EYES, etc. 



On view at — 



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i i a Well St., Jewin St., 



LONDON, E.C. 



YORKSHIRE'S 

 Contribution to Science 



(Based upon the Presidential Address to the Yorkshire 

 Naturalists' Union, delivered at the Leeds University) 



By THOMAS SHEPPARD 

 M.Sc, F.G.S., F.R.G.S., F.S.A.(Scot.) 



240 pages Demy 8vo, illustrated, tastefully bound in Cloth 

 Boards, with gilt top and gilt lettering on back and side, 



51- net. 



"Tlic object of this volume is to provide students of the Natural History of 

 Yorkshire with a guide to ;ill sources of informal inn likHy to be of service to 

 them. Many workers in biological and geological science will be grateful to Mr, 

 Sheppard for the particulars he has brought together about Yorkshire Periodical 

 Publications dealing with natural history, Yorkshire S< ientific Magazines now 

 extinct, and Yorkshire topographical and general magazines." Nature. 



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