27# ANALYSTS OF A MINERAL WATER. 



At different I In ve before observed, that this mineral water has been 

 water diften in ^ 0Ul1 ^ to possess different Specific gravities at different times, 

 gravity, consequently to contain at different times different quanti- 



ties of ingredients, 

 portions o/uT ^ ne s P ec i men °f <ne water that was sent to me in July 

 ingredients, 1806, the, specific gravity of. which was 1*01 ft* was submits 

 ted to some experiments, which show, that it differs also at 

 particularly different times in the proportion of its ingredients. In this 

 case the difference is very remarkable in relation to the oxide 

 of iron. 

 Instance in a When boiled in a retort that terminated under quicksil- 

 uonexanfined. ver » tne ¥ ac ^ oxia, e of iron fell down in abundance, and the 

 earthy carbonates were in very small proportion. The wa- 

 ter that was decanted threw down a green hydrate of iron 

 mixed with magnesia, on the addition of lime water. When 

 the water was boiled in the open air and filtered, lime water 

 threw down a brown precipitate. 



The following is the proportion of some of the ingredients 

 it contained. While this examination was proceeding I 

 was obliged to suspend it for a time, to attend to more 

 pressing avocations, and an accident prevented my complet- 

 ing it. 



Its content*. 3 From a wine gallon, or 231 cubic inches, were obtained 



Of muriate of soda • 483* 



lime.'. 31 1» 



magnesia k alumina 145* 



iron 26' 



0€ carbonate of iron g* 



Of silica .75 



Of earthy carbonates about ••»••• 4*5 

 Of carbonic acid and sulphuretted^ Cub In. 

 hidrpgen (the latter in small proper- L 23*735 



tion) * •*...• •- ••» « J 



Of azote 12/ 



The ingre- J n both of the foregoing statements it will be seen, that I 



Wy^offin the nave gi ven tne ingredients as they occurred on decomposi- 



exar.t state tion. 



. ereassigne . -g ut ^ ^ nQ means f l| ows? that they exist in that state 

 when in solution. It is mere probable, that when in solu- 



tion 



