198 Bepert on the Kooloo iron Mines. [No. 3. 



through the fissures of the mica schist, upon which repose a few 

 quartz rocks. The hottest of the springs are the nearest to the 

 right bank of the Parbutty in the village of Munnikurn. 



There are several springs close to one another, occupying a 

 space of about 30 feet, the principal basin, the one furnishing the 

 greatest abundance of water, forming nearly a circle of about 

 three to four feet in diameter, the sides of which are covered with 

 a deposit of ferruginous travertine, in appearance, something like a 

 cauliflower. 



The water from this basin issues through the fissures of the rocks 

 with a violent bubbling, accompanied with a deafening noise pro- 

 duced by the escape of a considerable quantity of aqueous vapour, 

 depositing at the same time on the surface the calcareous concre- 

 tions just mentioned, which it brings from the bowels of the earth. 

 There are also disengagements of gas, of which I could not deter- 

 mine the nature, not having the graduated instruments necessary to 

 collect it, nor the reagents indispensable for these sorts of pneuma- 

 tic operations, but I will fill this gap as soon as I possibly can, not 

 only on this water, but on all those which I have examined or may 

 analyse hereafter, being well aware, that the determinating gaa 

 contained in mineral waters in general, is the necessary complement 

 to the work. 



The temperature of the principal basin, taken several times was 

 202° Faht. that of the air being 63° Faht. The coincidence 

 existing between this temperature and the point of ebullition which 

 is also 202°, is very remarkable. There results then from this simi- 

 larity, that with the temperature of the water from the basin, in 

 case of need, the elevation of the spot from which the water issues 

 can be taken ; for the water of the source is really in a state of 

 ebullition. The elevation taken on the 1st of May, 1854, at -| past 9 

 a. M. was 5,705 feet above sea level. When this elevation is compar- 

 ed with the ascensional distance that the thermal waters are obliged 

 to flow over to arrive from the depth of the earth where it is heated, to 

 the surface of the soil, (a distance taken from the law of increasing 

 temperature in proportion as we penetrate into the interior of the 

 earth in a vertical direction,) we come to the consequence, that the 

 distance gone over by the liquid is at least 7,911 feet, that is 2,206 



