( 317 ) 
Art, XIX. — Observations on the Specific Gravity and Temv^ 
perature of Sea- Water, made during a Voyage from Ceylon 
to England, in 1819 and 1820. By John Davyj M. D. 
F. R. S., &c. &c. 
The following series of observations has been taken from the 
MS. Journal of Dr Davy, who has kindly entrusted it to us for 
this purpose. They embrace a very large portion of the earth’s 
surface, and, from the accuracy and sagacity of the able chemist 
by whom they were made, we have no doubt that they will be 
regarded by philosophers as forming a valuable addition to our 
hydrographical knowledge. 
The series of experiments commences at Columboin Ceylon, 
on the 4th December 1819 : and between the 1st of February 
and the end of June 1820, they were made on board the Eclipse. 
Columbo, December 4. 1819. 
Temp. Air. Temp. Water. Sp. Gravity. 
Wind. 
9h A. M. 79° 
82° 
1.0228 N. 
5 p, M, 83 
83 
1.0230 N. 
In both these experiments, 
shore below the flag-staff. 
the water was taken from the 
Columho, Dec. 11. 
Air. 
Water. 
Sp. Gravity. Wind. 
9hA. M, 78° 
. 
82° 
1.0231 N. 
Feb. 4. 1820. 
On board the 
Eclipse, N. Lat. 5® 19'> East 
Long. 80° 10'. 
Air. 
Water. 
Wind and Weather. 
lOh A. M. 
80° 
80°,5 
E, gentle, overcast. 
12 
80 
81 
NE. do. do. Light rain. 
2 P. M, 
79 
81 
NE. Gentle, pretty clear. 
5 
80 
81 
NE, by N. Do. do. 
8 
77 
80.5 
NE, Do. Little overcast. 
These temperatures were taken in sight of land. 
VOL. X. NO. 20. APRIL 1824. 
Y 
