ON SULPHUROUS MINERAL WATERS. , 41 



unci boiled the water till noniore gas was expelled. When the 

 liniewater is used carbonate of lime is precipitated in the pro- 

 portion of 20 grains to every 10 cubic inches of carbonic acid 

 gas ; when the solution of acetate, hidrosulphuret of lead is 

 thrown down in the proportion of 19 grains to 10 cubic 

 inches of sulphuretted; hidrogen gas; 



Another observation, not less remarkable, relates to sul- Sulphuretted 

 phuretted nitrogen gas. "'^''^S^" g^' 



It is known tliat Dr. Gimbernat, a Spanish chemist, as- ''^ the waters of 

 sells, that the thermal waters of Aix-la-Chapelle contain snl- ^^ 

 phuretted nitrogen gas, Mr. Schaub too says, that he has 

 obtained it from- tlie sulphurous waters of Nenndorf in and Nenndorf. 

 llesse. The following characters are ascribed to this gas. j^g chaiacters. 

 1. In smell it resembles sulphuretted hidrogen. 2. It is not 

 decomposable by carbonic acid. 3. It is not inflammable. 

 4. It will not maintain combustion. 5. It is not decom- 

 posable by nitrous acid. 6. It is not decomposable by con- 

 centrated nitric acid, which separates from it sulphur. 7. It 

 decomposes metallic solutions, and forms sulphurets. 8. It 

 has a great affinity for water, from which it is separable only 

 by long boiling. 



But Mr. Westrumb has found, that sulphuretted hidrogen Sulphuretted 

 gas, when washed with milk of lime, or passed through lime j^^s the*^ ^^* 

 diluted with water, acqu'nres all the properties here men- properties im- 

 tioued. Whether the sulphuretted hidrogen gas be obtained P^'^^'^*^ ^o ^^ ^Y 

 from sulphurous waters, or prepared artific.ally, the same 

 phenomena take place. If the milk of lane be taken from 

 it by an acid, sulphuretted hidrogen is disengaged, which is 

 inflammable, and possesses the usual properties. Sulphu- 

 retted nitrogen gas. tlierefme is a product of the operation. 

 Mr, Westrumb however is in doubt, whether this new gas be Whether a 

 produced by the action of^quipklime. on sulphuretted hidro- product or an 

 gen, or whether the sulph\^retted hidrogt^n gas contain sul- ^ "*^' ^^^^ ' 

 phuretted nitrogen. 



A third observation, not less interesting, is the presence Carbon in sul 

 of carbon and carburetted substances in sulphurous mine- [,,J.g'^°"* ^'*" 

 ral waters. ., ^; , , . . ' 



Mr. Westrumb^has jdiscovered in them & new principle, a A fetid resin of 

 fetid resin of sulphur fslinkendes. schwefelharzj. To ob- la'them.^"'""* 

 tain this, the sulphurous wuteu laust be evaporated in open 



vessels 



