vl PREFACE. 
which will be found of great use for the better under- 
standing of the text. 
In one word, I have done my best to raise my work 
to the standard of the actual state of science, and to 
render it, as far as my humble abilities go, a complete 
epitome of all that the general reader cares to know 
about the marvels of the deep. 
G. Hartwia. 
Saton VILLAs, LUDWIGSBURG : 
June 30, 1873. 
PREFACE 
TO 
THE FIRST TWO EDITIONS. 
For years my daily walks have been upon the beach, and 
I have learnt to love the ocean as the Swiss mountaineer 
loves his native Alps, or the Highlander the heath-covered 
hills of Caledonia. May these feelings have imparted 
some warmth to the following pages, and serve to render 
the reader more indulgent to their faults! 
G. Harrwie. 
GOTTINGEN: July 17, 1860. 
