1835.] Improvements in Science. 283 



II. Acidulous Waters. — 1. Ueberlingen on the borders of 

 Lake Constance, possesses a copious acidulous spring, which 

 has a temperature of 11° to 12°, and a density of 1*002, 

 containing in the pound of 16 ounces, the following sub- 

 stances, by the analysis of Herberger. {Journ. de Pharm. 

 xix. 192.) 



Carbonic acid .... 266*6 cubic inches 

 Azote . 43*3 



Proto-carbonate of iron . 43*424 grms. 



Proto-carbonate of manganese 3*936 ,, 



Sub-carbonate of soda . . 14*600 ,, 



Sulphate of soda . . . 39*000 „ 



Chloride of calcium . . 30*280 „ 



Chi oride of magnesium . 19*920 ,, 



Matter containing azote . 32*600 ,, 



Carbonate of lime . . . 88*520 ,, 



Alumina 6*000 „ 



Silica 32*000 „ 



360.880 

 The ochry substance which it deposits consists of 

 Hydrous protoxide of iron . 75*70 

 Oxide of manganese 

 Extractive matter 

 Carbonate of lime 

 Carbonate of magnesia 

 Silica and alumina 



100*00 



This water is employed as a tonic. 



2. Cramaux. — Its temperature is 4° 5' C. (40° 1' F.) 24 



litres (li galls.) analyzed by Lamothe # afforded 



Carbonic acid - - - £ vol. 



Carbonate of iron - 50 gr 



Sulphate of iron - - 12 ,, 



Carbonate of lime - 48 ,, 



Sulphate of lime - - 24 ,, 



Muriate of lime - - 48 ,, 



Muriate of potash - 48 ,, 



Sulphate of magnesia 7 ,, 



Animal matter - - 3 .. 



* Journ. de Pliarm. xix. I9S. 



240 



