Yorkshire Naturalists^ Union. 



ANNUAL MEETING, 



Doncaster, 



Tuesday, 3rd March. 



PRESIDENTIAL ADDRESS at 6.30 p.m., 



by Rt. Hon. Lord Walsingham, M.A., F.L.S. 



A MICROSCOPICAL SOIREE 



will be provided by 



the Doncaster Microscopical Society. 



Full particulars in the usual circulars. 



WM. CENISON ROEBUCK,) Hon. Sees. 

 WM. EAGLE CLARKE, j" Leeds. 



The Entomologist's Monthly Magazine. 



Price 6d. monthly, 24 pages 8vo, with occasional Illustrations. 



Conducted by J. W. Douglas, R. MacLachlan, F.R.S., 

 H. T. Stainton, F.R.S., &c. 



This Magazine, commenced in 1864, contains standard Articles and Kotcs on 

 all subjects connected with Entomology, and especially on the Insects of the 

 Biitish Isles. 



Subscription 6s. per volume, post free. The volumes commence with the 

 June number in each year. 



The early volumes are out of print, but can be occasionally obtained by pur- 

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 The succeeding vols, (strongly bound in cloth) can be had separately or together 

 at 7s, per vol. 



London : JOHN VAN VOORST, i, Paternoster Row. 

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THE JOURRAL OF MICROSCOPY AKD NATURAL SCIEKCE. 



PUBLISHED QUARTERLY, PRICE 1/6. 



This well-known Journal, the recognized organ of the POSTAL MICROSCOPICAL 

 SOCIETY, contains a number of valuable and interesting articles relating to every department 

 of ^Microscopy and the allied Sciences. 



These are all written bj' experienced Microscopists and Specialists in their various departments 

 of Science, and are illustrated by a number of Lithographic Plates — making it not only one of the 

 largest and cheapest, but also one of the most widely circulated Journals of its class. 



Other special features of the Journal are "Half-hours at the Microscope with INIr. Tuffen 

 West, F.L.S. , F.R.M.S., etc.;" Selected Notes from_ the Society's Note-books." New books 

 relating to Microscopy, or to any branch of Natural Science, are carefully reviewed. Correspon- 

 dence on matters of Microscopic or Scientific interest is inserted. There is also a section devoted 

 to "Current Notes and Memoranda," "Exchanges," &c. 



The Journal of Microscopy and Natural Science is edited hy Mr. Alfred Allen, 

 Hon. Sec. of the Postal JNIicroscopical Society, under the direction and with the assistance of the 

 Committee ; and may be had of all Booksellers. 



London : BATLLIERE. TINDALL & COX, 20, King William St., Strand, W.C. 



NOW ENLARGED TO TWENTY PAGES. 



THE NATURALIST'S WORLD. 



Illustrated. Price Twopence Monthly. 



"A capital little monthly." Bradford Observer. 



"Every page is interesting." Midland Gazette. 



The following interesting articles have appeared in the last, few numbers : — 

 The Preparation of Rock Sections for the Microscope ; Variation in Lepidoptera 

 (with illustrations) ; The Red Chalk of Hunstanton (with illustrations) ; The 

 Phenomena of Exuviation in the Brachyura (with illustrations) ; A glance at 

 Spanish Coleoptera (with an illustration) ; The Gnat (with illustrations) ; Butter- 

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 Notes and Queries, etc., etc. 



Specimen copy sent post free for 2M. Yearly Subscription 2s. 6d. post free. 

 Offices: ILKLEY, YORKS. 



London : W. SWAN SONNENSCHEIN & CO. Of all Booksellers. 



