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. 



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. , 



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

 Yorkshire with a guide to all sources of information likely 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 Scientific Magazines now 

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



GRISELDA. 



A POETICAL DRAMA, FOUNDED ON BOCCACCIO'S NOVEL AND CHAUCER'S POEM. 

 By E. HAWORTH EARLK. 



64 pages, 7 in. by ."> in., artistically printed and strongly seivn in stout boards. 



Price is. net. 



"This is the classic story which a Hull man of real literary aspirations and 

 attainments has turned into a play. Mr. E. Haworth Earle is to be congratulated 



alike on his choice of subject and his treatment of it 'tis no small credit to 



a man that he should pioduce, so effectively arranged and so smoothly written, a 

 poetic-drama as 'Griselda.'" — Eastern Morning News. ' 



London : A. BROWN & SONS, Ltd., 5 Farringdon Avenue, E.C. 4. 

 and at Hull & York. 



Printed at Browns' Savile Press, 40, George Street, Hull, and published by 

 A. Brown & Sons, Limited, at 5 Farringdon Avenue, in the City of London. 



Sept. 1st, 1917. 



