359 
Dr Marcet’s Experiments on Sea^Water. 
ago, a vessel was lost at Ceuta, on the African coast, and its 
wreck afterwards thrown up at Tariffa, on the European shore, 
fully two miles west of Ceuta 
The results obtained by Dr Marcet from twelve specimens of 
water from the Arctic Seas, agree wonderfully with those pre- 
viously obtained by ”Dr Eyfe, from sixteen specimens, and pub- 
lished in the 1st Number of this Journal^ the intervals of lati- 
tude and longitude being nearly the same, and also with those 
of Mr Scoresby, published in his work on the Arctic Regions. 
Number 
of Speci- 
mens. 
Intervals of 
Latitude. 
Intervals of 
Longitude. 
Specific 
Gravity. 
Dr Fyfe’s result. 
Dr Marcet’s result, 
Mr Scoresby *s result, 
61° 52' N. 
78 25 N. 
66 50 N, 
80 29 N. 
76 16 N. 
80 0 N. 
10°20'E. I 
65 32 W./ 
11 15 E, 1 
76 46W.j 
90 OE. 1 
0 lOW.j 
1.02697 
1.02664 
1,02653 
Dr Marcet next proceeds to give ,an account of the general 
results respecting the temperature of the Polar Seas, as obtain- 
ed by the officers of the late expedition to those regions ; but it 
is a duty which we owe to Mr Scoresby to state, that he has 
completely anticipated them in these observations. 
In Baffin’s Bay, the Mediterranean Sea, and the Tropical 
Seas, the temperature of the sea diminishes with the depth, ac- 
cording to the observations of Phipps, Ross, Parry, Sabine, 
Saussure, Ellis and Peron ; but it is a remarkable fact, that in 
the Arctic or Greenland Seas, the temperature of the sea increases 
with the depth. This singular result was first obtained by Mr 
Scoresby, in a series of well conducted experiments *[•, and has 
been confirmed by the later observations of Lieutenants Frank- 
lin, Beechy, and Mr Fisher. 
* A similar fact is stated by Dr Hudson: “ In 1712, M. de L’Aigle of the' 
Phoenix of Marseilles, giving ehace near Ceuta Point to a Dutch ship, came up witb 
her in the middle of the Gut between Tariffa and Tangier, and there gave her 
one broadside, which sunk her. A few days after, the sunk ship, with her cargo 
of brandy and oil, arose on the shore near Tangier, at least four leagues to the 
west of the place where she sunk, and directly against the strength of the current ; 
which has persuaded many men that there is a recurrency in the deep water in the 
middle of the Gut that sets outward to the ^rand ocean^ which this accident very much 
demonstrates,^'— FhiL Trans. 1724, vol. xxxiii. p. 192. 
*1* See Scoresby s Account of the Arctic Regions^ vol. i. p. 187. 
