
AN ELEMENTARY HANDBOOK OF PRACTICAL OCEANOGRAPHY FOR NATURALISTS, 
TRAVELLERS, SAILORS, AND YACHTSMEN. 
Prepared by the 
CHALLENGER SOCIETY FOR THE PROMOTION OF THE STUDY OF 
OCEANOGRAPHY 
And Edited by G. HERBERT FOWLER. 
With numerous Illustrations and Diagrams. 6s. net. 
The primary aim of the book is practical—namely, to teach men with no scientific training how they can 
do useful work for the advancement of science; it deals with the various aspects of the ocean chapter by 
chapter, points out where new or renewed observations are needed, and includes only sufficient theory to 
' enable the observer to understand what kind of a brick he is building into the pyramid of knowledge. 
The book has been-written entirely by practical specialists. Being addressed, in the first instance, to non- 
scientific readers, it has been phrased as far as possible in simple English ; but it willbe found useful by many 
who already know something of Oceanography. 
Lonpon: “JOHN MURRAY. 
BIRDS OF NORTHUMBERLAND AND THE 
EASTERN BORDERS. 
By GEORGE BOLAM. 
- Published by HENRY HUNTER BLAIR, Alnwick. Price 20s. yur. 
WATKINS & DONCASTER, 
Manufacturers of Cabinets and Apparatus for 
Collectors of Birds’ Eggs, Insects, Plants, &c. 
A large stock of Insects, Birds’ Eggs, &. List of Clutches of Birds’ 
Eggs on application. Climbing Irons, best steel, with straps complete, 
ds. per pair. Egg Collector's Outfit, containing Drills, Blowpipes, and all 
Requisites complete, with Book of Instructions, post free, 3s. 3d. Label 
Lists of every description. Birds and Animals stuffed and mounted in 
Natural Positions. For particulars see our Catalogue, one hundred pages. 
36. STRAND, LONDON, W.C. 



British Lepidoptera, Coleoptera, Tropical Butter- 
259, 000 flies; also British Birds. Type Collections for Museums, 
&e., at very moderate prices. Life-histories of British Lepidoptera, mounted 
on food-plants in neat glazed cases; selections on approval. <A Collection 
of 1000 British Plants, named and mounted. Glazed cases for various 
Natural History objects from 2s. 6d. doz. ; second-hand Cabinets, Store- 
boxes, &c. Lists from— 
A. FORD, South View, Irving Road, eournamouthy Hants. 
HE INSECT HUNTER’S COMPANION. _ Instruc- 
tions for collecting and preserving Butterflies and Moths, Beetles, Bees, 
Flies, &&. By the Rev. Joseph Greune, M.A. — Fifth Edition, revised and 
extended by A. B. Farn. The Chapter on Coleoptera by EpwarpD NEWMAN; on 
Hymenoptera by Freprerick Suiru; on Breeding Gall-flies by Epwarp A. Fitcu. 
i Where to find moths and butterflies; how to catch; how to bring home without 
injury; how to kill; how to set; how to find the caterpillars; how to manage ; 
how to feed; how to breed the perfect insects ; and numerous similar subjects. 
Price 1s. 6d., postage 2d. 
WEST, NEWMAN & CO., 54, Hatton Garden, London, E.C. 


