104 Water of the Elton, Bead, 



common salt may be obtained here. In the cool sum- 

 mer nights, according to Pallas, Epsom salt is deposited, 

 and is again dissolved during the day. The greater the 

 quantity of chloride of magnesium and Epsom salt, so 

 much the less is there of common salt; which, from the 

 elevation of the temperature, dissolves in no greater quan- 

 tity in the same. Hence, the reason for the small quantity 

 of common salt which Rose obtained. When an analysis 

 of such a saturated water is given, it is absolutely necessary 

 to give the specific gravity and the temperature. The 

 reasons given are sufficient to account for the difference in 

 the two analyses. 



Erdmann found the constituents of the Bogden sea, 



Sulphate of lime, "74 



Sulphate of magnesia, .... 10*30 



Sulphate of soda, 215-76 



Muriate of lime, 8-85 



Muriate of magnesia, .... 48 - 63 

 Water, 715-72 



1000-00 

 The water of the Elton sea resembles that of the Dead 

 sea, but the latter has a less specific gravity, and a smaller 

 quantity of solid constituents. The quantity of salt dimi- 

 nisheswhen the Jordan is overflowed. GayLussac allowed the 

 water to cool to 19°-4 F. without separating any salt. While 

 Klaproth states, that at the bottom of the flask which con- 

 tained the specimen which he examined, crystals of com- 

 mon salt were deposited which soon disappeared. The 

 specific gravity of the Dead Sea varies, and the reason is 

 obvious. Macquer, Lavoisier, and Sage found it 1-240; 

 Marcet and Tennant 1*211; Klaproth 1-245 ; Gay Lussac 

 at 62°-6, 1-2283; Hermbst'adt at 60°, 1-240. The propor- 

 tion of ingredients also varies. Gay Lussac found them 

 26-24 per cent. — consisting of chlorides of sodium, cal- 

 cium, magnesium, and potassium, and traces of gypsum, 

 differing from that of the Elton Sea by the absence of 

 Epsom salt, and the presence of chloride of calcium. 



According to Marcet, the specific gravity of the water of 

 the Sea of Urmia is 1-16507, and its constituents 22-3 per 

 cent, consisting of common salt, Epsom salt, and sulphate 

 of soda. The saline contents of Urmia and the Dead Sea 



