88 MARITIME OBSERVATIONS. 
Tn confirmation of what has been faid about the eddy 
current of the gulph ftream, | have extrated from the 
journal of an officer belonging to the Britith fhip of war 
Liverpool, fome obfervations which defcribe this eddy on 
both iides of the flream * two other extra&ts from the 
fame journal } defcribe a current among the weftern Ifles, 
which is perhaps the gulph ftream then turning to the 
fouthward. ‘This journal was communicated to me by 
Capt. Schuyler of the Britifh packet, on board of which 
_ Imade my laft experiments and obfervations. 
t In addition to my journals | have fubjoined an account 
of fome experiments on fifh which fhow that theiranimal 
heat was 16° degrees colder than the water atthe furface; 
from which it may be fuppofed that the water at bottom is 
in proportion colder than that above. It may be natur- 
ally fuggefted, that trying the heat of the water atthe fur- 
face, (the only way in one’s power when failing rapidly 
through it,) is too inaccurate to be depended on, fince 
the furface muft be heated by the atmofphere. To this it 
may not be amifs to anfwer.—1. That by repeated expe- 
riments at the depth of 30, 40, and 60 fathom I have 
found the water below, out of foundings, to be no more 
then fix degrees colder thanthat above; andat four or five 
fathoms depth, when the fea was agitated, there was no 
difference worthy notice. 2. When the fea is not agitat- 
ed and the furface, by being expofed to a hot fun, is warm- 
er, the weather being calm, it is eafy to have water from 
a confiderable depth; this I have found to make a differ- 
ence of one or two degrees only, and it is eafy to make 
the allowance. 3. ‘Lhe difference of heat which marks an 
approach to land is fufficiently fenfible at the furface for 
the purpofe of giving notice of danger, I have generally 
found it to be 6° in three hours run, andlong before we 
were 
“ Appendix N°. I. 
+ Appendix N°. If and III. 
$ Appendix, N®%. IV. 
