THE NATURALIST. 



During the next month or two it is hoped to insert the following articles :— 

 List of Lincolnshire Freshwater Algse.— J. Larder. 



List of Flowering and Cryptogamic Plants of Woodhall Spa.— Miss S. C. Stow. 

 Geology of Brough, East Yorkshire.— Thomas Sheppard. 

 Yorkshire Naturalists at Boston Spa. 

 Lepidoptera noted at Everingham.— John Sumner. 



Naturalists at Lincoln.— Rev. E. A. Woodruffe-Peacock, F.L.S., F.G.S. 



Erosion of Yorkshire Coast.— Thomas Shkppard. 



List of Lincolnshire Fresh-water Mites.— C. F. George. 



Yorkshire Mosses in 1899.— C. P. Hobkirk, F.L.S. 



The Beck, a Study,— Rev. E. A. Woodruffe-Peacock, L.Th., etc. 



Slime-threads of Planarian Worms.— H. Wallis Kew, F.Z.S. 



Urgently Needed : An Abundant Supply of Short Notes. 



Part I. to IV. now read} - . Part V. in the Press. 



A MONOGRAPH 



OF THE 



Land &. Freshwater Mollusca 



OF THE 



BRITISH ISLES, 



BY 



J. W. TAYLOR, F.L.S. , 



Menibre Honoraire de la Societe Malacologique 

 de France, 

 With the assistance of 

 W. Denison Roebuck, F.L.S., the late Chas. 

 Ashford, and other well-known conchologists. 

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On t/ie 26th of every Month, price 6d. ; 6s. a year post 

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THE ENTOMOLOGIST: 



An illustrated Journal of General Entomology. 



Lithographed Plates by the best Entomological 

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Edited by RICHD. SOUTH, F.E.S. 

 with the assistance of 

 R. Adkin, F.E.S. ; T. R. Billups, F. E . S . ; 

 W. L. Distant. F.L.S., etc. ; Edward A. Fitch, 

 F.L.S., etc. ; F. W. Frohawk, F E.S. ; Martin 

 Jacoby, F.E.S. ; W. F. Kirbv, F.L.S., F.E.S. ; 

 J. H. Leech, B.A., F.L.S., etc. ; Dr. D. Sharp, 

 F.R.S., etc. ; G. H. Vcrrall, F.E.S. ; W.Warren, 

 M.A., F.E.S. 



London : 



WEST, NEWMAN & Co., 54. Hatton Garden, E.C. 



In Demy Svo., cloth, ftp. 250. Price 12/- 

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AN INTRODUCTION TO THE STUDY 



OF THE 



DI ATOMACE/E. 



By FREDK. WM. MILLS, F.R.M.S., 



Author of ' Photography Applied to the 

 Microscope,' etc. 



WITH A BIBLIOGRAPHY, 



By JULIEN DEBY, F.R.M.S. 



London : Iliffe <S>= Son, 3, St. Bride Street, 

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 Washington, D.C.: The Microscopical Publishing- 

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On the 15th of every Month. Price One Shilling;. 



THE ZOOLOGIST. 



The Recognised Journal of Natural History. 



Edited by W. L. DISTANT. 



A Fourth Series commenced with the January 

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TRANSACTIONS OF THE 



HULL SCIENTIFIC AND 

 FIELD NATURALISTS' CLUB. 



Vol. I., No. II., 1899, contains the following papers: — 

 Our Water Supply, Rev. II. P. Slade. M.B.A.A.: The 

 Chalk Water Supply of Yorkshire, John Robert Mortimer; 

 Reminiscences of a Whale Hunt at Goole over Thirty Years 

 Ago, William Morfitt; The Mosses of the East Riding, 

 J. J. Marshall; The Contents and Origin of the Gravels 

 around Hull, Thomas Sheppard : Note on a Bronze Celt 

 recently found in Holderness. Thomas Sheppard; List of 

 the Macro- Lepidoptera collected within eight miles of 

 Hull. J. W. Boult; Notes on the Progress made by the Club 

 in 1898-9; A Fragment of the Early History of Spurn, J. R. 

 Boyle, F.S.A,; Our Average Member, R. H. Philip; and 

 several Notes. (See Review in 'The Naturalist,' Jan. 1900, 

 p. iz.) 



Sold by A. Brown & Sons, Savile Street, Hull, 

 at is. 6d. 



Birds' Eggs. Great Bargains. 



Having- lately received large consignments of 

 Eggs for which I have not room in my cabinets, 

 I am willing to part with ;£"ioo worth for ,675 

 cash, including most Eggs in British List, many 

 never held by dealers. Suitable for Museum. As 

 I am not a dealer and have not a living to make 

 by such sales, I can. let them go cheap. Smaller 

 quantities at great reductions. Not having a list, 

 I will take the average dealer's price, and allow 

 discount therefrom. Send list of wants and 

 name of dealer you would like to trade by. 



THOMAS RAINE, 

 Woodland View, Chapel Allerton, LEEDS. 



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