291 



When the analysis was completed, with the exception of 

 the quantitative determination of the bromine, Dr. Apjohn 

 became aware that in the discovery in the water of the Dead 

 Sea of the potassium, manganese, and bromine, he had 

 been anticipated by M. C. G. Gmelin, who has assigned to 

 it the following composition. 



Specific gravity s 1212. 



Chloride of calcium, 3.2 1 4 1" 



Chloride of magnesium, 11.7734 



Bromide of magnesium, 0.4393 



Chloride of potassium 1.6738 



Chloride of sodium 7.0777 



Chloride of manganese 0.2117 



Chloride of ammonium, 0.0896 



Chloride of aluminum, 0.0075 



Sulphate of lime, 0.0527. 



Water, 75.4602 



= 24.5398. 



100. 



After having seen this analysis, Dr. Apjohn stated, that he 

 again looked for alumina and ammonia, but could not detect 

 the slightest trace of either. The quantities, however, of 

 these principles found by Gmelin were so small, that their 

 non-appearance in Dr. Apjohn's analysis cannot be consi- 

 dered as a material discrepancy. But there are other striking 

 differences. 



The density of the specimen examined by Gmelin, and 

 its percentage of saline matter were considerably higher than 

 those which belonged to the water analyzed by Dr. Apjohn, 

 a circumstance easily accounted for, by the fact of the latter 

 having been collected about half a mile from the embou- 

 chure of the Jordan, and towards the close of the rainy 

 season. But notwithstanding this, it might have been an- 

 ticipated, that the results of both for the different salts 

 should be relatively the same ; such, however, is far from 



