89 



And Mr. Coomber has supplemented this hy the following 

 more exact analysis received to-day :— 



" I regret to say that I have been unable to get an exhaustive 

 quantitadve analysis of your sample of water completed in time 

 for your paper upon it, but its qualitative examination is complete, 

 and almost aU the weighings made that have any teaching 

 regarding the sample. 



"The principal constituent of the water is Chloride of Sodium. 

 Other constituents present in quantity are Lime, occurring both 

 as Calcium Chloride and as Carbonate of Lime held in solution by 



Carbonic Acid. 



"Potassium Chloride is also present in appreciable quantity as 



weU as Silica. 



"Lithium and Iron occur in very small quantity, and there are 

 also present exceedingly small traces of Magnesium and of 

 Sulphates and Phosphates. 



" Iodides, Bromides, and Nitrates are entirely absent. 

 " The specific gravity of the sample is 1-02899. 

 "The total weight of the solids dissolved (dried at 180c*), is 

 i292-34 grains per gallon. 



"The weighings that have been made are the following :— 



« Calcium Chloride 149-27 grains per gal. 



" Carbonate of Lime 11-99 „ 



" Sodium Chloride, with a small \ 



amount of Potassium, Chloride |- 1 091 -49 „ 



and Silica ^ 



1252-75 „ 



The writer does not possess sufficient chemical knowledge to 

 discuss as fully as he could wish the chemical aspect of the 

 question; and the analysis having only come to hand this 

 morning, there has not been sufficient time to give it adequate 

 consideration; but the foUowing remarks may serve to direct 

 attention to one or two points in the analysis. 



