45 
KEE 
si 
Allman, FES., 
PREFACE. 
Fahrenheit, Celsius, and Réau- 
mur, is introduced for com- 
parison. 
My various sources of infor- 
mation, and the friendly as- 
sistance I have received on all 
hands during the progress of 
our work, are acknowledged, so 
far as possible, in the text. 
I need here only renew my 
to 
May and the officers of the 
thanks Staff-Commander 
‘Lightning,’ and Captain Cal- 
ver and the officers of the 
‘Porcupine,’ without whose 
hearty sympathy and co-ope- 
ration our task could never 
have been satisfactorily accom- 
plished; to my colleagues, Dr. 
Carpenter, FE.R.S., and Mr. 
Gwyn Jeffreys, E.R.S., 
have cordiaily assisted me in 
who 
every way in their power; and 
to the naturalists into whose 
hands the animals of various 
classes were placed for descrip- 
tion and study,—the Rev. A. 
Merle Norman, Professor Kol- 
liker, Dr. Carter, (F. Rist we 
Professor Martin Duncan, I.R.S., 
