AND GEOLOGICAL RELATIONS OF CERTAIN HOT SPRINGS. 
603 
scrambled along this parallel to the river for a distance of a mile or a mile and a half 
without any indication of hot springs ; at last, in a ravine to the right, at a very con- 
siderable height above theTet, I discovered steam rising near a cascade. This spring, 
which I shall call (A), I at one time conceived to be identical with the Source de la 
Cascade of Anglada ; I am now, however, persuaded that it is a different one, and was 
perhaps never visited by him. From his description it clearly appears that his “ Source 
de la Cascade” was in the Gorge of Carensac, through which flows the Torrent Real, 
near Thuez, and therefore considerably above the trifling ravine I have mentioned, 
and which is distinctly marked nearly opposite Canavielles in the Departmental Map 
of the Atlas National. This, in fact, is the distinctive mark of the spring (A) just 
mentioned. It occurs in a small ravine very near the Tet, but at a considerable 
height above it, almost opposite to the copper mine of Canavielles, and within sight of 
the Gratis d'Olette. It is on the right bank of the small torrent traversing the ravine, 
and issues copiously from a cleft in a slaty granite rock. The principal point of issue 
is well marked, and at some height above the torrent, into which it flows. It is sul- 
phureous, and contains baregine. 
The other spring (B) I have distinctly identified with the “ Source du Bord de la 
Riviere " of Anglada, whose position he has very accurately defined. It is a little 
further down the bank of the river, but instead of being at a great height above it, it 
is only separated from the Tet by a piece of flat meadow. It is almost exactly oppo- 
site to the mine of Canavielles, and its aspect is towards the chasm through which 
the Tet runs at the Gratis d'Olette. It is extremely copious and sulphureous. An- 
glada has noticed justly its remarkable limpidity. It contains bar&gine. It issues 
from alluvium by a number of streamlets, which vary a little in temperature, so that 
the determination is not so good as the preceding one. It varies about 1° at different 
points : I have recorded the hottest which I noticed. 
A little below this is a spring noticed by Anglada, as consisting of water as pure 
as that of ordinary springs, and having a temperature of 55° cent. = 131° Fahr. 
C. Temperature. — The elevation of Thuez I am not acquainted with. Parrot 
makes the height of Fontpedrouse, a village a little higher up the river, = 3402 feet. 
As the valley falls rapidly, we shall not perhaps be far from the truth if we estimate 
the elevation of these springs at about 2700 feet. 
Troughton. Reduced. 
1835, August 28. — Thuez, Spring (A) 171*3 17T5. 
“ Source Sulfureuse du Bord de la 
Tet,” hottest part (B) . . . 164-8 165-0 
The spring (A) is almost the hottest, not only in the Pyrenees, but even on the 
continent of Europe *. Anglada mentions one nameless spring in this same fertile 
* According to M. Arago the hottest spring in Europe unconnected with modem volcanic action, is that 
of Chaudesaigues (Auvergne), whose temperature he quotes at 80° cent. = 176° Fahr. — Annuaire du Bureau 
des Longitudes, 1836. 
4 h 2 
