WATERS from ICELAND. 



119 



they came fo near, and am perfectly fatisfied that this analyfis 

 is as complete and exact as it was in my power to make it, 

 with that quantity of water which I got for this purpofe. 



The proportions of the above enumerated ingredients to the 

 water in which they are contained, fhew the quantities of them 

 contained in an Englifh gallon of 231 cubical inches, or 58,484 

 grains, which are as follows : 



In an Englifh gallon of Rykum water : \ 



Cauftic foffil alkali, 

 Argillaceous earth, 

 Siliceous earth, 

 Common fait, 

 Glauber's fait exficcated, 



gr. 3- 

 0.29 



21.83 

 16.96 



7-53 



In an Englifh gallon of Geyzer water 



Cauftic foffil alkali, 

 Argillaceous earth, 

 Siliceous earth, 

 Common fait, 

 Glauber's fait exficcated, 



2.80 



3I-58 



14.42 



8-57 



Having now ftated the feveral ingredients of thefe hot 

 fprings. and their proportions, the principal queftions which 

 remain to be considered, are, How is the filiceous earth diilblved 

 in them, or combined with the water ? Has hot water alone a 

 power to dilTblve this earth, or was it diiTolved by the medium 

 of the alkali only ? And how came the falts which we find in 

 thefe waters and the fulphureous gas to be combined with 

 them ? As all attempts to anfwer thefe queftions muit be con- 

 jectural, different opinions will be formed concerning them ; 



and 



