Vlll 
PREFACE. 
terially improved. I have, therefore, taken the 
present opportunity of acknowledging the readi- 
ness with which this additional information has 
been supplied, and of offering Mr. Brown my 
best thanks. 
It now only remains for me to add, that 
the views with which these volumes are illus- 
trated were engraved by Mr. Finden from my 
own sketches on the spot: the charts, which 
are reductions of those in the Admiralty Atlas, 
were engraved by Mr. Walker; and the three 
plates of Natural History by Mr. Curtis, from 
drawings made from the specimens by himself, 
by Henry C. Field, Esq., and by Miss M. Field ; 
to each of whom I take this opportunity of re- 
turning my best thanks, and also of bearing 
testimony to the correctness with which the 
respective subjects have been represented. 
London , March 1826 . 
