AND GEOLOGICAL RELATIONS OF CERTAIN HOT SPRINGS. 
601 
water ; so that within a radius of a few hundred feet we have the curious spectacle of 
hot mineralized springs, a cold mineralized spring, and a cold spring of pure water, 
rising at once. 
III. La Source Margail is an unemployed mineral spring, which issues from amongst 
blocks of granite behind the Bains Colomer. I took its temperature where it first 
appears. 
All these springs are sulphureous. They deposit baregine; and Anglada states 
that the gas which they disengage is pure azote. 
C. Temperature. — The elevation of Las Escaldas I do not exactly know * : it can 
differ, however, but very little from that of the neighbouring village of Dorres, which, 
according to Parrot, is 4764 feet above the sea. For the observations of Carrere 
in 1764, on the springs of the “ Pyrenees Orientales,” I refer to the table given in the 
introduction ; nor shall I now quote the observations of Anglada, (who was provided 
with two thermometers by Fortin, the errors of which, however, I am not aware that 
he determined,) as I shall give them in a tabular view in the sequel. 
Bains Merlat 
{ 
Troughton. 
Reduced. 
f Spring . . 
. 107*1 
O 
°f>. 
o 
1 Buvette . . 
. 107-2 
107-1 
La Douche . 
90-8 
90-7 
Grande Source 
. 91-0 
90-9 
• 2 -ail . . . 
92'0 
91-9 
XIV. Dorres. 
A. Geological Position. — The spring of Dorres is between Las Escaldas and the 
village of Dorres, being about ten minutes’ walk from the former. Its geological po- 
sition is quite similar to that of Las Escaldas. 
B. Specialties, 8$c. — This remarkable spring rises in a sort of by-path from a 
crack in the granitic mass. It is extremely copious, and its origin well marked, 
so that there is no difficulty in ascertaining its true temperature. There is no 
bathing establishment further than a rude sort of pool formed by the peasants. 
The waters are sulphureous, and contain baregine. They run neglected into the 
nearest brook. 
C. Temperature. — The elevation of this spring must be nearly the same with that 
of the village, or about 4800 feet (Parrot). 
Troughton. Reduced. 
1835, August 2 7- — Dorres . . . 104°'6 104 o, 4 
* My barometer having been broken in the Vallee d’Aran, I had no means subsequently of ascertaining 
heights. 
4 H 
MDCCCXXXVI. 
