an Intermitting Brine Springs near Kissingen. 317 



irregularity seems in some measure to have ceased, for I watched 

 it for a long time together, without perceiving any change in 

 its level ; it is, however, very inconveniently closed ; I could 

 only judge by the sound that tliere is a constant discharge. of 

 gas. A variation in the discharge of gas is evident, but ir- 

 regular, in the Ragozzi and Pandur springs at Kissingen, pro- 

 bably depending on the state of the barometer, like the blowers 

 of inflammable gas in our coal-mines. At Bocklet (four miles 

 from Kissingen) there is a periodicity in the chalybeate springs, 

 stated to resemble exactly on a small scale, that of the salt spring 

 of Kissingen. It is probable that the whole series of springs 

 connected with the great line of fissure of the Saal Valley 

 already mentioned, will be found to partake of the periodic 

 character. 



Temperature of the Spring. — The Soolensprudel or Runde 

 Brunnen, is stated by Kastner, as having had, in December 18S6 

 and January 1837, by a mean of three experiments, a tempe- 

 rature of 19°.5 Cent. = 67^.1 Fahr., the temperature of the air 

 being 7°.5 Cent. = 45°.5. During my stay at Kissingen in July 

 and August 1838, I frequently measured the temperature with 

 every precaution, during different conditions of the spring, with- 

 out finding any difference greater than the possible errors of 

 observation. I always used two thermometers, marked A. 1. 

 and A. 2. by Adie of Edinburgh, of which the former having 

 its freezing point unchanged, may be considered as the more 

 correct, and on one occasion I compared these with a standard 

 by Troughton, of which I knew exactly the error, and a ther- 

 mometer by Greiner of Berlin. The following observations 

 will illustrate this constancy : — 



Troughton 

 A. 1. A. 2. Corrected. Greiner. 



July 23. 5 p. M. Just before the Ebb, 



24. 11a. m. An hour after flow, 



25. 7 P. M. AVell just filled, 

 28. 2 hours after flow, 65 .1 65 .6 65^2 65».2 



Aug. 2. 15 min. after flow, still 



near the bot. of shaft, 

 14. 1 hour after flow, 



at icork ; but, as at the Sprudel, at other times quite irregular, ebbing for per- 

 haps half a day. Its habitual state is that of ebb, whilst that of the other is 

 flow. The operation of boring was recommenced shortly before I left Kis- 

 singen, and no overflow had then taken place. The shaft, 554 Bavarian 

 feet deep, is entirely in Bunter Sandstein. It is thought that the bore 

 may at last reach the deposit of salt itself, or a much richer source of brine. 



