334 Prof. Bischof on the Teinperature of 



lions made in November 1830 to fall between b^^'.^.B and 57°. 2,* 

 whereas the mean temperature of Vienna is 50°.81 .f At Erlangen 

 (mean temp, between 47°. 75 and 50°.0), springs of 53°.375 were 

 met with in the Keuper (?) formation at depths of 168 and 99 

 feet. J At Wiirtzburg (mean temp. 50°.675), an artesian well 

 was sunk 200 feet deep, the temperature of which was 54°.7S5.§ 

 At Niirnberg (mean temp, between 47°. 75 and 50°.0), springs 

 were discovered in the Keuper at depths of 71, 166, and 357 

 feet, having temperatures of 50°.0, 5^\^5, and 56°.188 ; and 

 others at 100 and 318 feet of 53°.375 and 54°.5.|| In Wurtemberg 

 a great number of artesian wells have been sunk with various suc- 

 cess, all of which have temperatures exceeding the mean temper- 

 ature of the places at which they are situated.^ Thus eight of 

 these wells at Berg, near Stuttgard, in the muschelkalk yield- 

 ed, at depths of 117 and 163 feet, mineral waters of 65°.75 

 to 70°. 25, very strongly impregnated with carbonic acid gas. 

 The warmest contained a greater, and the coldest a smaller, 

 proportion of gas. In another case, in the same neighbourhood, 

 a stream of water suddenly burst forth at a depth of 98 feet, with 

 great violence, caused by the explosion of the compressed gas. 

 The water contained a great quantity of carbonic acid, and had 

 a temperature of about 65°.75. In and about Canstadt, water 

 strongly impregnated with carbonic acid gas was obtained, hav- 

 ing a temperature of 66°. 425. Five artesian wells, sunk at Heil- 

 bronn, on the Neckar, yield water of 54°.5.** The mean tem- 

 perature of the places in Wiirtemberg falls between 47°. 75 

 and 50°.0. In the Amalienbad at Langenbriicken, in Baden, a 

 strong sulphurous spring of 56°. 75 was obtained by boring. -ff 

 According to my observations on ten artesian wells at MUnster, 

 in Westphalia, their temperatures seem to exceed the mean tem- 



• Die artesischen Brunnen in und um Wien von Jacquin und Partsch. 

 Wien, 1831. 



t Kastner*s Archiv. fur Chemie und M6t^orologie, vol. iv. p. 48. 



X Ibid. vol. ii, p. 228. 



§ Ibid. vol. iv. p. 374. 



II Von Bruckmann ueber artesischen Brunnen. Heilbronn, 1833, p. 224 

 and 229. 



5f Correspondenzblatt des Konigl. WUrtemb. landwirthscliaftl. Vereins 

 1833,vol. ii. No. 2. p. 152-1. 



S Von Bruckmann, p. 34. ft Ibid. 248. 



