APPENDIX. 
I. 
EXPERIMENTS MADE ON BOARD U. S. SHIP VINCENNES, 9TH APRIL, 1840. 
TIME, SUN’S ALT, SKY, DEPTH POT SEEN. CURKENT, 4 
10 a. mM. 38° Clear. 16 fathoms, None. 
ll « 48 “ 16 “ 1 fathom north. 
12 noon. 50 se 17 cS 1 « west-northwest. 
lp. mM. AT ce 1 ly BQ a « 
Diets 40 “ 15 «& Bw “ 
3% 30 «“ 15 « Q  & “ 
&“ 19 Gs 14 « 2  «  west-by-south, 
“ 7 “ 4 « )  & “ 
6 « 4 “ 13 «“ 2  « west-southwest. 
ee ee ee 
EXPERIMENTS MADE ON BOARD U. S. SHIP PEACOCK, 3lsT marcH, 1840. 
Water at the surface stood at 
20 
30 
40 
50 
60 
70 
80 
96 
« 100 
“« 200 
« 300 
«© 400 
« 500 
“ 
10 fathoms below the surface stvod at 
75° 
70 
72 
73 
714 
72 
713 
714 
714 
694 
73 
638 
56 
52 
49 
(399) 
