540 THE MEDICINAL SPRINGS OF SOUTH AFRICA. 



The item " halfgebonden koolzuur "' contained in the 

 original rep<^rt has not been taken into account, because it is 

 not obvious from the figures that c(>nil)inefl carbon dioxide pre- 

 sent as bicarbonate is meant. 



Cold Spring. 

 Cations. Anions. 



Na 0.174 CI 0.131 



K o. 1 1 1 SO. 0.02^ 



Ca o.oi r CO., o.it,S 



Total 0.296 Total 0.297 



In view of the extremely small amoitnt of calcium the com- 

 bined CO2 is calculated as CO. " 



15. Sulphur Spring District Zoutpansbcrg. 



I have not l^een able definitely to identify the sulphur sjjring 

 in the Zoutpansl)ero' District, but there is reason to l>elieve that 

 it is the sprinjj 30 miles north of Louis Trichardt. When re- 

 ceived at the laboratory the water contained neither sulphuretted 

 hvdrogen nor sulphides. 



16. Machadodorp. 



On the farm Geluk 29, the i)roperty of the Maatschappij 

 tot Exploitatie van Cjronden t^n (irondrechten in Zuid Afrika, in 

 the immediate vicinity of the \illage of Machadodorp. is a group 

 of springs containing alkaline sulphides as well as sulphuretted 

 hydrogen. Their temperature, <Si.5^83.3° F., although lower 

 than that of Malmesbury, is nevertheless exceptiimally high for 

 a sulphur spring, and, moreover, they are highly radio-active. 

 Seven " eyes " are enclosed by a cement strticture and roofed 

 over to provide a kind of basin, from which bathing cells arx^ 

 -fed. The above company is considering the erection of a proper 

 establishment. One of the springs, i\v,\ issuing into the basin 

 above referred to. has been analysed .separately. Whilst corres- 

 jx»nding closely in composition and nature to the water in the 

 basin, it was found to contain between three and four times as 

 much sulphuretted hydrogen and .sodium sulphide. The water 

 in the basin having been exposed to the atm.osphere for some 

 time before being analysed, the sulphide probably suffered de- 

 composition, and some of the sul])huretted hydrogen diffused out. 



Table of Ion b^yuivALENTS. 



Cations. .\nions. 



Na 0.238 C) -0.147 



K 0.005 SO4 0.01 T 



IJ 0.005 ' ^ CO., 0.090 



Ca 0.064 SH 0.0003 



Alg 0.027 



Fotal 0.3.^9 Total 0.2483 



