THE NATURALIST. 



Dining the next month or two it is hoped to insert the following articles. 



Durham Diptera, a Preliminary List. — Rev. \V. J. Wingatk, 

 The Modern .Method of Studying Agarics.— Geo. Massek; F.L.S. 

 Economic Fungi. -J. H. Hoixand, F.L.S. 



New and Additional Localities for West Yorkshire Plants.— Lister Rothkray. 

 Yorkshire Bryological Committee— Report for 1901. J. J. Marshall, 

 The Pollard Willow, Bottesford.— Max Peacock 



'Instinct': Presidential Address to the Lincolnshire Naturalists' Union:— Rev. Alfrer 



Thokxi.ey. ^l.A.. F.L.S., F.E.S. 

 Notes on Derbyshire Annelids. — Rev. Hildjerig Frieni>. 

 A Holiday amongst Northern Mosses.— Rev. C. H. Binstead. 

 Lincolnshire Naturalists at Grantham.— Rev. E. A. W. Peacock, L.Th., F.L.S. 



Always Urgently Needed : An Abundant Supply of Short Notes and Short Articles. 



YORKSHIRE NATURALISTS' UNION. 



ANNUAL MEETING, 



M XJ L L , 



Wednesday, 10th DECEMBER 1902 



(Xot 3rd as previously announced). 

 Presidential Address by Percy F. 

 Kendall, F.G.S., on 

 "Some Problems in thl; Distribution 



of Animals and Plants,' 

 followed by Conversazione. 



T. Sheppard, 



Hon. Local Secretary, 

 Municipal Museum, Hull. 



FOR ADVERTISEMENTS 



IN THIS JOURNAL 



Apply to 



JOHN VVADDINGTON, 

 Advertising Contractor, 



38, Great Wilson Street, Leeds. 



TO CONCHOLOG3STS. 



Copper Collecting-Scoops 



FOR SALE, LEEDS PATTERN. 

 Price 25. each. 



Apply c/o Editor. 259, Hyde Park Road. Leeds. 



BINDING CASES. 



Cloth cases, gilt lettered, for 1901, 

 are to be had at od. each ; if by post, 

 I }4d. extra. 



Cases for previous years can always 

 be had. 



The N&turalist for any year will be 

 bound up in cloth case for is. 6d., 

 postag-e, 4'CL extra. 



259, Hyde Park Road, LEEDS. 



AN IMPORTANT NEW WORK. 

 Just Published." Price 6s. 



FAMILIAR BUTTERFLIES 

 AND MOTHS. 



By W. F. KIRBY, F.L.S., F.E.S., 



Assistant in Zoological Department , 

 British M11 sen in {Natural History). 

 With 18 Special Plates containing 2i6> 

 Illustrations in Colours. 

 CASSELL & Co., Ltd., London; and 

 all Booksellers. 



JVoiv ready, Svo. cloth, price 6s., post free. 



LIST OF 



YORKSHIRE LEPIDOPTERA. 



By G. T. PORRITT, F.L.S. 



Contains copious records of the localities, etc., 

 of the 1.340 species of macro- and micro- 

 iepidoptera know n to inhahit the county ; par- 

 ticulars of local variation in species : with all 

 other necessary information on the suhject. 



To be had only from the Hon. Secretaries of 

 the Yorkshire Naturalists' Union. 



259, Hyde Park Road, LEEDS. 



-Votc ready, complete, S*ro. Cloth, 



Price 6s., post free. 

 TME 



ALGA-FLORA OF YORKSHIRE. 



A complete account of the 1,044 

 Fresh Water Alga; of the County. 



By W. WEST, F.L.S. 

 and G. S. WEST, B.A., A.R.C.S. 



To be had only from the 

 Secretaries of the 



Hon, 



YORKSHIRE NATURALISTS' UNION, 

 250, Hyde Park Road, Leeds. 



