JOURNAL 
OF THE 
VOYAGE TO THE NIGER.” 
Wednesday, May 12.—After seven o'clock, p.m., we quitted 
Devonport. Knowing that I should be attacked with sea- - 
sickness, and not be able to attend with accuracy to many - 
matters, I determined to confine my attention during the 
voyage to the subject of temperature, and more espe- - 
cially to that of the sea, which I therefore ascertained — 
at noon, and noted in my meteorological journal. The : 
weather being favourable, I suffered less, although never 
quite free from sea-sickness, than I had expected, and became 
anxious to extend my observations to the temperature of the 
air, and to the barometer. Our instrument had not been 
rectified, and being without a thermometer to mark the — 
temperature of the quicksilver, was rather useless: in our . 
days, such imperfect observations are of little value. Nor 
could I find on the whole deck a place for my thermometer, - 
without exposing it to many dangers; and the contrivance - 
proposed by me for that purpose, and approved of by the - 
Captain, is not yet finished. : 
This evening I paid particular attention to the phospho- - 
rescence of the sea. In this latitude it is not seen exceptin | 
the wake of the ship. Only the waves nearest the vessel | 
sai E i uo C ace cde tr NST NS 
> Translated from the original German Journal of Dr. Vogel, in i 
the possession of the African Civilization Society, by the kindness of | 
F. Scheer, Esq., of Kew Green.—Ep. 243 
