AND GEOLOGICAL RELATIONS OF CERTAIN HOT SPRINGS. 
609 
B. and C. Specialties and Temperature. — The principal spring rises into a very 
narrow circular vessel, with much disengagement of carbonic acid gas. This is in 
one corner of the bathing-house in the interior, which is mean and incommodious. 
The spring, however, is pretty copious, yielding twenty litres per minute*, and is hotter 
than any of those of the Bains du Mont Dor. Elevation above the sea, 2769 feet. 
Troughton. Reduced. 
1835, September 17. — La Grande Source . . . 121°*3 1 2 1°*2 
III. Baden-Baden. 
A. Geological Position. — These springs, on the border of the Schwartzwald, have 
a position almost identical with that which we have so invariably remarked in the 
Pyrenees. They occur just where the slate rocks have been violently upraised by a 
curious granitoid porphyry, which forms the picturesque elevations near the Alte 
Schloss, and which passes into a true granite. Upon the slate, red sandstone lies un- 
conformably, and I believe horizontally. The elevation of this range is among the 
older of M. Elie de Beaumont’s systems : he expressly states that the Grits bigarrd 
is undisturbed. 
B. Specialties , 8fc. — The only spring whose temperature I observed is the principal 
one, situated near the church. It rises into a large basin, in which I could perceive 
no evolution of gas. Nearly insipid : copious. 
C. Temperature. — 1832, August 9. 
Troughton. Reduced. 
Principal spring of Baden-Baden . . . 147 0, 3 147°'4 
IV. Loische or Leuk. Vallais. 
A. Geological Position. — These springs rise from limestone, but not at a great 
distance from the vast granitic chain which extends by the upper parts of the valley 
of Lauterbrunnen to the Jungfrau. The baths of Leuk are situated in a deep and 
precipitous valley (at this part, however, of considerable breadth), very near the foot 
of the Gemmi. The evidence of disruption on the great scale in the Valley of Leuk is 
almost as clear as such evidence can ever be. It is surrounded by mural precipices 
of singular boldness. 
B and C. Specialties , Temperature, 8$c. — The baths of Leuk rise at a height of 
4692 feet above the sea. A fine spring issuing at the end of the promenade I found 
to have a temperature of 43°*4 (by what thermometer not stated). The only hot 
spring of which I took the temperature was that which rises in the place just in front 
of the principal inn, called La Maison Blanche. I believe it to be the principal 
spring. The water is nearly insipid : copious. 
Troughton. Reduced. 
1832, September 21. — Spring at Leuk . . 123 0, 2 1 23°* 1 
* Lecoq, Le Mont Dore et ses Environs, p. 239. 
4 I 
MDCCCXXXVI. 
