234 M. HE BoNNAUD on the Palatinate. 



led us, only making the geological singularity presented by 

 the saline springs of Creutznach the more striking, I con- 

 sider it interesting to add a few words on other saline springs 

 situated in the eastern part of the Palatinate, but which 

 offer with the springs of Creutznach, equally remarkable 

 differences and analogies ; I speak of the springs of Diirck- 

 heim, which also feed a yery considerable saline, placed 

 near the town of that name, at the foot of the eastern slope 

 of the mountains of the red sandstone of the Vosges, and on 

 the edge of the gr^at Talley of the Rhine, the surface of 

 which is composed of more recent rocks. The position of 

 these springs appears then, at first sight, to place them among 

 common salt springs, and particularly those of Relchinge, 

 of which mention was made at the commencement of this 

 notice. The pits, in which the salt water of Diirckheim is 

 collected, are cut across the sandstone, and yet this water 

 bears a great resemblance to that of Creutznach : it is still 

 more slightly salt than the latter, and contains less than a 

 hundredth part of muriate of soda : it contains besides only 

 earthy muriates and a little bitumen, without any trace of 

 sulphates. These resemblances lead us to presume that the 

 springs of Durckheim rise from beneath the red sandstone, 

 and probably from the same porphyritic rock as those of 

 Creutznach. 



I have above noticed the saline springs which rise from 

 the coal messures, an uncommon position for these springs, 

 though much less singular than that of the porphyritic rocks. 

 I shall lastly notice, but solely for the sake of comparison 

 ■with the known facts of Creutznach and Diirckheim, another 

 spring of the same kind, also very weak, which flows over 

 the ancient slates of the Hiiudsruck, near Brodenbach, on 

 the banks of the Moselle, 4 leagues to the S. of Coblentz. 

 M. Calmelet has noticed two others at Salzig near Boppart, 

 and at Hoffelt near Barweiler. See Journal des Mines, No. 

 146. But not having visited these two localities, I know 

 not from what rock these springs appear to rise. 



