1S130 Water of ilie Dead Sea, Sf 



year 177^, and entitled Analyse de VEau du Lac Jsphaliite.. 

 Two flasks, sent by the Chevalier Tolesin Guettard, furnished the 

 requisite quantity of water for this anal} >is. 



They found the specific gi^avity of the vater 1-240. 



As the result of their analysis, they obiainad from 5 poi!ods 

 of the water 5 ounces of crvstah-zer commoii salt^ hm not qmte 

 free from a small mixture of xhe salts with an earthy baze. Far- 

 ther they obtained 30^ ounces of earthy salts, coi^sisting of foot 

 parts of muriate of magnesia, and three parts of muriate or lime. 

 These proportions, reduced to 100 parts, give us the constituents 

 of the salts of the Dead Sea as follows 



Muriate of Magnesia .21 '786 



Muriate of lime , . , 16'339 



Muriate of soda , 6-250 



44-375 



The second analysis of this water has been published by Dr. 

 Alexander Marcet, in the Philosophical Transactions for i 807, 

 part 2d. The water examined by him, in compaRy with Mr. 

 Tennant, had been brought from the Dead Sea by Messrs. 

 Gordon and Clunis during their travels in the East^ and bad been 

 sent by them to Sir Joseph Banks. 



The specific gravity of this water was 1*211, 



From 20 parts of the water there were obtained by evapo- 

 rating in a sand-bath, at the temperature of 212° Fahrenheit^ 

 7*7 parts of dry saline residue. 



As the result of his analysis, he estimates tlie constiiueDts in 

 100 parts of the water as follows : — 



Muriate of lime , . . , .3-792 



Muriate of magnesia * 10' 100 



Muriate of soda 10^676 



Sulphate of lime 0*054 



24'622 



Or, according to another mode of calculating. 



Muriate of lime 3 '920 



' Muriate of magnesia .10*246 



Muriate of soda o.. lO^SSO 



Sulphate of lime 0*054 



24-580 



This estimate does not, however, accord with the original 

 statement, that 20 grains of water leave a residuum of 7 '7 

 grains of dried salt. To make them agree, 100 graips must 

 have furnished 38^ grains of salt. 



