

F. re r 
SCIENCE OF THE SEA 
AN ELEMENTARY HANDBOOK OF PRACTICAL OCHANOGRAPHY 
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 will be found useful 
by many who already know something of Oceanography. 

‘London: JOHN MURRAY. 

WATKINS & DONCASTER, 
Manufacturers of Cabinets and Apparatus for 
Collectors of Birds’ Eggs, Insects, Plants, &c. 
A large stock of Insects, Birds’ Eggs, &c. List of Clutches of Birds’ 
Eggs on application. Climbing Irons, best steel, with straps complete, 
ds. per pair. Hgs 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, Bournemouth, Hants. 
