56 Dr Daubeny 07i Thermal Springs, 



— and that the forces seen in operation during a volcanic erup- 

 tion are such as, if developed on a larger scale, would be fully- 

 adequate to produce such results, we cannot but regard it as 

 most philosophical to look upon the elevation of these chains as 

 the effects of those same forces, which give rise to volcanos in the 

 present day. 



The same kind of reasoning, which has been applied to the 

 springs of the Pyrenees, might be extended to others similarly 

 circumstanced, as to many at the foot of the Alps, those near 

 the Riesengebirge in Silesia, and perhaps those described at the 

 foot of the Caucasus. 



There are, however, many hot springs in various parts of the 

 globe, which lie too remote from any of these great systems of 

 elevation, to be attributed with any degree of probability to 

 such a cause. 



Those of Bath, Clifton, and Buxton, are prominent instances 

 of this kind, and the apparent absence of any indications of vol- 

 canic agency of a recent date in their neighbourhood, led me, in 

 my work on Volcanos (p. 363), to conclude, that their heat 

 must be accounted for by other causes of a more local nature. 



A farther examination has since, however, convinced me, that 

 in many of these instances also, the spots in which they are found 

 exhibit proofs of violent convulsions having, at some period or 

 other, taken place in their vicinity. 



Now if such a conclusion can be borne out in a great majori- 

 ty of cases, it would seem hardly consistent with sound reason- 

 ing, to assign to this class of springs a different origin from that 

 which we have been led to attribute to those found in the two 

 former kinds of situation. 



A good illustration of this is supplied us by the spot, whence 

 issue the hot waters of Carlsbad in Bohemia. These are de- 

 scribed by a very judicious observer. Von Hoff, as issuing from 

 the bottom of a narrow glen, which several circumstances would 

 incline us to attribute to the effects of some great natural con- 

 vulsion, rather than to the operation of ordinary causes. Thus, 

 although the direction of the defile in which the hot springs oc- 

 cur is from east to west, yet the valleys into which it opens at 

 either extremity run from north to south ; so that there seems an 

 equal difficulty in referring it to the agency of any mighty mass 



