WATKINS & DON CASTER 
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NATURALISTS, 
36, STRAND, LONDON, W.C. 
(Five Doors een Charing Cross), 
Keep in stock every description of 
APPARATUS, CABINETS, BOOKS, AND SPECIMENS 
for Collectors of 
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Catalogue (96 pages) sent post free on application. 
Issued Monthly, illustrated with Plates and Text Figures 
To Subscribers, Gs. 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 Natuval History Dept., Roy. al 
Scottish Museum: William Ey ans, F.R. SE,, 
Member of the British Ornithologists’ Union ; and 
Percy H. Grimshaw, F.R.S.E.,F.E.S., Assistant- 
Keeper, Natural History Deft., Royal Scottish 
Museum. Assisted by J. A. Harvie-Brown, 
THE ENTOMOLOGIST’S MONTHLY 
MAGAZINE. 
PRICE SIXPENCE MONTHLY. 
Edited by G. C. Champion, F.Z.S., pl: E. Collin, 
F G. T., Porritt, F.L.S., W. Lloyd, 
aie wler, D.Sc. M. A., F. i: se “T; J. Walker, 
| 
This Magazine, commenced in 1864, contains 
Standard Articles and Notes on all subjects 
connected with Entomology, and especially on 
the Insects of the British Isles. 
F.R.S.E.,F.Z.S.; Evelyn V.Baxter, H.M.B.O.U.; 
Leonora 7 Rintoul, H.M.B.O.U.; Hugh Sz Glad. Subscription—6s. per annum, post free 
GURNEY & JACKSON, — 
1, Paternoster Row, 
stone, M.A., F.R.S.E., F.Z.S.; James Ritchie, 
M.A., D.Sc. 
M.B.O.U. 
Edinburgh: OLIVER & BOYD, Tweedale Court 
Lond.: GURNEY & JACKSON 33 Paternoster Row 
A. Landsborough Thompson, M.A., 
London. 

Map of Watsonian 
Vice Counties of Yorkshire 
Prepared with the assistance of 
Mr. W. DENISON ROEBUCK 
Printed on stout paper, size 6 X 8, with a space for notes, 
25, 10d.; 50, 1/6; 100, 2/6; 500, 10/6. 
Post free in each case. 
THE publishers have pleasure in announcing that at the suggestion 
of readers of The Naturalist, the Map appearing in the December 
number has been re-issued separately. The map is of special service 
to naturalists, as it enables them to record their captures according 
to the vice-counties as given in Watson’s Topographical Botany. 
A. BROWN & SONS, Ltp., 40 GEORGE ST.; HULL. 

a 
Printed at BROWNS’ SAVILE PRESS, 40, George Street, Hull, and published by 
A. Brown & Sons, Limited, at 5 Farringdon Avenue, i in the 2d of London, 
May tst, 1916. 
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