6 



PEOCEEDINGS OF THE GEOLOGICAL SOCIETY. [NoV. 11, 



separated from one another by very thick beds of gypsum, particu- 

 larly striking at Diirrheim in the Schwarzwald, near Dieuze, and at 

 several other places in Lothringen. 



It is difficult to believe that while there exists a thickness of 

 24 feet of pure rock-salt, associated with saturated brine, on the 

 borders of the Pranconian basin near Salzungen, at the neighbouring 

 IN'eustadt well, which yields saturated brine, and at the Kissingen 

 well further towards the centre, only poor saline clay should have 

 been deposited. It is far more probable that a thick rock-salt deposit 

 is hidden beneath the Anhydrite, and would probably soon have 

 been reached by a continuation of the boring in the Schonborn 

 shaft, and thus have shown the future of the Kissingen saline wells. 



In conclusion the author epitomizes the results of his researches 

 upon the section in the Schonborn-weL. in the accompanying sec- 

 tion, and discusses the most probable mode of the formation of the 

 Kissingen wells, the succession of the rocks, and their chemical 

 condition. 



Formations, 



Section of the Schbnhorn Well at Kissingen. 



•D , Thickness. 



Kecks. f^.^ .^_ 



Limestone 17 11 



Liver-shale of the 

 LowerBmiter, with 

 so-called "Horn-- 

 kalk " and Gryp- 

 sum. 



Granular and Crystalline Gypsum 16 1 



Limestone 4 1 



Compact Gypsum 2 9 



Red clay-shale alternating with 



Limestone, Marl, and Gypsum . . 67 3 



Depth. 



ft. in. 



1590 9 



1608 8 



1624 9 



1628 10 



1631 7 



1698 10 



Bituminous Platten- 

 dolomit of the 

 uppermost Zech- "^ 

 stein. 



^ Compact limestone with bisulphide 



ofiron 3 2 



Bluish-black Limestone 38 



^Eed saliferous clay with Gypsum... 35 1 

 Blue saline clay 34 11 



Saliferous marls of the 

 uppermost Zech- ■< 

 stein. 



Brownish clay with Gypsum, sali- 

 ferous 2 



Salt-rock 12 3 



Salt-rock with Gypsum 7 9 



Salt-rock with Gypsum and An- 

 hydrite 52 



/^Anhydrite 115 



Anhydrite ■{ Anhydrite alternating with Gyp- 



1702 







1740 







1775 



1 



1810 







1812 







1824 



3 



1832 







1884 







1999 







sum 



2 9 



2001 9 



