460 



DR R. E. SCORE SBY- JACKSON ON THE TEMPERATURE 



Santa, 32 75 cent. = 9095 Fahr. The temperature was taken also at thebm-ette, 

 and was found to be, as nearly as possible, the same as at the griffon. 



Source du Bois, or Source Froide. — The temperature of this spring was taken 

 at a little reservoir (about 6 feet by 3) at the point where the water issues from 

 the rock. My thermometer recorded a temperature of 54-80 Fahr., M. de Pietea 

 Santa, 12-8i) Cent. =55-04 Fahr. 



Source d'Orteich. — This spring arises in the Vallee du Valentin, where an 

 establishment is now building. The temperature was taken at the huvette, which 

 is placed immediately over the griffon, and was recorded by me at 72-30 Fahr., 

 and by M. de Pietra-Santa at 22-50 Cent. = 72-50 Fahr. 



The following table shows the temperature of the springs at Eaux Bonnes, as 

 recorded by different observers at various periods : — 



Name of Observer and Date of Observation. 



Professor Forbes (July 1835) . . . 



M. Fontan (Oct. 1835) 



M. Fontan (Sept. 1837) 



M. Gintrac (1841) 



Professor Filhol (1850) 



Professor Filhol (1861) 



MM. Francois and Pietra-Santa (1862) 

 M. de Pietra-Santa (Aug. 1863) . . 

 Dr Scoresby-Jackson (Aug 1863) . . 



La Vieille. 



Froide. 



Orteicli. 



Fahr. 



Cent. 



Fabr. 



Cent. 



Fahr. 



Cent. 



91-40 



3300 



54-40 



12-45 



. . . 





92-03 



33-35 



55-04 



12-80 



... 



... 



91-96 



33-32 



55-40 



1300 



... 





91-76 



33-20 



55-40 



1300 



... 





89-96 



32-20 



53-96 



12-20 



... 





90-95 



32-75 



55-94 



13-30 



71-96 



22-20 



90-95 



3275 



55-04 



12-80 



71-96 



22-20 



90-95 



32-75 



55-04 



12-80 



72-50 



22-50 



91-20 



32-89 



54-80 



12-67 



72-30 



22-39 



cauterets. 



At Cauterets I was kindly received by Dr Buron, and had some conversation 

 with him ; but he had been for some time, and was then, suffering from severe 

 illness, and was consequently unable to assist me in my researches. He was 

 good enough, however, to introduce me to his friend Monsieur de Lalande, 

 a gentleman who has travelled extensively, and has had great experience in 

 chemistry and engineering ; and also to Monsieur Broca, an experienced pliar- 

 macien, who has made himself thoroughly acquainted with the mineral waters of 

 the district. With these gentlemen I spent many hours in observing the tempera- 

 ture of the springs. I employed, as on all occasions, the tiiermometer marked D. 

 The thermometer employed by MM. de Lalande and Broca was made by 

 Salleron of Paris, and contained ten degrees of Centigrade to the inch of my 

 measuring tape. 



The mineral springs in the vicinity of Cauterets are numerous, and are divided, 

 according to their position relative to the town, into two groups, named respec- 

 tively Soutlierii and Eastern. The eastern is the northern group of some authors, 

 and occasionally the springs of La Raillere are separated into a group by them- 



