



of a Saline on Kiskiminetas River. 75 



content of lime and magnesia in combination with chlorohydric 

 acid, rendered it impossible to determine with accuracy by direct 

 evaporation, its content of solid matter. It will however be seen 

 from the following, that the solid ingredients contained in it 

 amounted to 35-79 per cent. 



2. A weighed quantity of the bitter water was super-saturated 

 with ammonia, which produced no precipitate, and mixed with 

 oxalate of ammonia until all the lime was effectually precipitated 

 as oxalate of lime. The latter was collected on a filter, washed 

 and incinerated with the usual precautions, and from the weight 

 of the carbonate the amount of pure lime calculated. The fil- 

 tered solution was evaporated to dryness, the ammoniacal salts 

 expelled by heat, the residuary mass mixed with a small portion 

 of water and oxyd of mercury and again evaporated to dryness, 

 and ignited. On treating the mass with water, the magnesia re- 

 mained undissolved. It was collected on a filter, washed, incin- 

 erated and weighed. The filtered solution was evaporated to 

 dryness, and the weight of the remaining chlorid of sodium as- 

 certained. By subsequent solution in water, and addition of 

 chlorid of platinum and alcohol, it only yielded a minute portion 

 of chloro-platinate of potassium. 



3. Another weighed portion of the bittern was diluted with 

 water and mixed with a sufficient quantity of dilute sulphuria 

 acid ; then an equal volume of alcohol of the ordinary strength 

 was added to the whole mass. The precipitated sulphate of lime 

 was collected on a filter, washed with a mixture of 5 vol. of al- 

 cohol and 6 vol. water, incinerated and weighed, and from it the 

 amount of lime calculated. The filtered liquid was evaporated to 

 dryness and ignited, and yielded the joint weight of the sulphates 

 of magnesia and soda. These were then dissolved in water and 

 precipitated with acetate of baryta. The filtered solution was 

 evaporated to dryness, charred, and by treatment with water the 

 carbonate of soda dissolved from the insoluble carbonates of mag- 

 nesia and baryta. The former was separated from the latter by 

 extraction with dilute sulphuric acid, and the amount of sulphate 

 of magnesia estimated. Deducting the latter from the joint 

 height of the sulphate of magnesia and soda, the amount of sul- 

 phate of soda was obtained, from which that of the soda was 

 calculated. As stated above, it only contained a small amount of 

 Potassa.* 



4. Another smaller portion of water was acidulated with a 

 f ew drops of nitric acid and then precipitated by nitrate of silver, 

 and the weight of the chlorid of silver with its smaller contents 

 of bromid and iodid of silver ascertained. 



* This method 

 •cid and alcohol 



I of separating lime when in preponderating quantity by sulphuric 

 - -, the convenience and accuracy of which I pointed out in an es.<ay 

 °n the analysis of magnesian limestones, by R. E. Rogers and M. H. Boy6, Journ. 

 franklin Inst., March, 1840, I cannot sufficiently recommend. 



<#* 



