76 M. H. Boye's Analysis of the Bittern, fyc. 



5. The accurate quantitative determination of bromine in con- 

 nection with larger quantities of chlorine, is as is known con- 

 nected with difficulties, and different experiments performed after 

 the different methods recommended, yielded different results va- 

 rying from 0*3 to 1 per cent. The result adopted in the follow- 

 ing, was obtained by distilling a certain quantity of the water 

 with peroxyd of manganese and a small but sufficient quantity 

 of chiorohydric acid, receiving the bromine in a small globular 

 receiver containing ammonia, and in the tubulure of which was 

 fixed a modification of Liebig's potassa bulb, as employed by 

 Will and Varrentrap in the analysis of nitrogenized organic com- 

 pounds, but in this case containing, like the receiver, ammonia. 

 The chlorid and bromid of ammonium thus obtained were de- 

 composed by evaporation to dryness with caustic baryta, the mass 

 treated with water, the excess of baryta precipitated by carbonic 

 acid, and then the bromid and chlorid of barium precipitated by 



nitrate of silver, and the weight of the bromid and chlorid of silver 



ascertained after perfect desiccation on a counterpoised filter. It 

 was then treated with nitro-muriatic acid by heat and its weight 

 again ascertained, and from the difference in weight the amount 

 of bromine calculated. 



6. The amount of iodine was determined by precipitation of 

 chlorid of palladium, and ascertaining the weight of the iodid of 

 palladium. 



Taking the mean of <§>§ 2 and 3, the results of the analysis 

 were as follows: 



Potassa, 

 Soda, 



Lime, 



Magnesia, 



Chlorine, 

 Bromine, 

 Iodine, 



In 100 parts of the water. 



. 0081 

 0464 



. 12-560 



4-200 

 . 23-068 



0-701 

 . 00035 



from which the following composition of the water may be 

 derived. 



In 100 parts of the water. 



Chlorid of potassium, . . . 0-128 



Chlorid of sodium, . . 0-877 



Chlorid of calcium, . . . 24-640 



Chlorid with \ 



Bromid and > magnesium, - . 10146 

 Iodid of ) 



Water, 



f Mg. 2-575 



6-866 



701 

 0035 



Philadelphia, Nov., 1844 



64209 

 100-000 











