CATARACTS, AND INUNDATIONS. 255 



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

 Alexander Marcet, in the Philosophical Transactions for 1807* part 

 3d. The water examined by him, in company with Mr. Tennant, 

 had been brought from the Dead Sea by Messrs. Gordon and 

 Clunis during their Travels in the East, and had been sent by them 

 to Sir Joseph Bank*. 



The specific gravity of this water was 1 '2 1 1 . 



From 20 parts of the water there were obtained by evaporating 

 in a sand-bath, at a temperature of 212 Fahrenheit, 77 parts of dry 

 saline residue. 



As the result of his analysis, he estimates the constituents in I0f) 

 parts of the water as follows : 



Muriate of lime 3791 



Muriate of magnesia , 10-100 



Muriate of soda 10'37t> 



Sulphate of lime 0-054 



24-622 



Or, according to another mode of calculating, 



Muriate of lime 3 -p2O 



Muriate of magnesia * 10'246* 



Muriate of soda 10-360 



Sulphate of lime , . . . O-054 



24-580 



This estimate does not, however, accord with the original state* 

 ment, that 20 grains of water leave a residuum of 7-7 grains of 

 dried salts. To make them agree, 100 grains must have furnished 

 38^ grains of salt. 



This circumstance, together with the marked difference in the 

 proportions of the salts, furnished by each analysis, induced me, 

 says the former celebrated chemist, to undertake an analysis myself", 

 having been furnished with a sufficient quantity of water for the pur- 

 pose by Dr. William Thomson, whose recent death, at Palermo, lias 

 deprived mineralogy of a zealous disciple. This water had been 

 brought by the Abbe Mariti from the East, and had been given by 

 him to Dr. Targioni Tozzetti. 



