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 = 1212. 
Chloride of calcium, 3.2141 
Chloride of magnesium, 11.7734 
Bromide of magnesium, 0.4393 
Chloride of potassium 1.6738 
Chloride of sodium 7.0777 — 94.5398. 
Chloride of manganese 0.2117 
Chloride of ammonium, 0.0896 
Chloride of aluminum, 0.0075 
Sulphate of lime, 0.0527 
Water, 75.4602 
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 amaterial 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 ofthe 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 
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