of the (I old -Ji elds of California. 



42; 



The for 



Contents per Imperial Gallon. 



grs. 



Silica 7-00 



Alumina 7*70 



Oxide of iron traces 



Lime 1*1)6 



Magnesia 1/41 



Potash 085 



Soda 1-26 



Chlorine 2-25 



Sulphuric acid .... 2580 



egoing results may be rendered thus : — 



Chloride of magnesium 

 Free sulphuric acid 



Contents per Imperial Gallon 



Silica 



Tersulphate of alumina 

 Sulphate of iron 



„ lime . . . 



„ potash . . 



,, soda 



tr 

 4 

 1' 

 2 

 1 

 3 

 _1 



48 



00 

 67 



ace 

 76 



•57 

 •87 

 •77 

 •01 

 •57 



; 22 



It is somewhat remarkable that this water, issuing from the 

 ground in a boiling state, should at the same time contain chlo- 

 rides and free sulphuric acid; but it must be remembered that 

 the acid is in an exceedingly dilute state, and that the water was 

 collected immediately at the mouth of the aperture from which 

 it emerged. It is probable that potash and soda may exist 

 in the form of the bisulphates of those bases, since an excess of 

 sulphuric acid is present. 



It was observed that where these acid waters flowed away at a 

 temperature of above 200° F. several low forms of vegetation 

 (probably Confervacea?) appeared to flourish, but to become less 

 abundant and less vigorous where the temperature had become 

 considerably reduced. 



Steamboat Springs. — The most remarkable instance on the 

 Pacific coast of the actual growth, on a large scale and at the 

 present time, of mineral veins is probably that afforded by the 

 boiling springs in Steamboat Valley, seven miles north-west of 

 the great Comstock silver vein and Virginia city. 



These springs are situated at a height of about 5000 feet above 



