Tin: .mi:dki\ Ai, spkixcs oi" sorrii afkica. 543 



2y. Kniidfontciu, Dii'isioii irHloionorc (flic f^rof^crty of Mr. B. 

 J. StccjDiann. 



From the Dwyka alons^ 'ryg;erberi^ axis. 



28. Spriiu/ on the Black Uinfolosi River, 36 miles east of Vry- 

 heid.' 



2y. Farm Sulphur Springs. District Piet Relief. 

 30. Farm Warmbad. District Pict Retief. 

 31. Farm Oirc'crivacht. District Piet Retief. 



32. Calais No. J286. 



Hot springy 30 miles south of Rhodes Drift, on the LimjXDpo 

 River. Yields approximately 400 gallons per minute. Highly 

 purgative. Is visited by occasional trekboers. 



2S- Veffonfein 2299, 100 miles north of Pietersbnrg, Transt'aal. 



34. Kapessa Hot Spring. 



This is situated 5 miles from the confluence of the Zambesi 

 and Sanyati Rivers { Northern Rhodesia), 16° 35' South Latitude, 

 28° 42' East Longitude. The spring rises through a fissure in 

 the basaltic rocks. The water is practically boiling, and so far 

 as can be ascertained from the natives the temperature never 

 changes. The vapour rising from it can be seen for miles. The 

 water flows into a morass about half a mile distant, and the 

 natives cut the grass there during the winter time and extract 

 salt from the deposit. It is stated that this spring proves an 

 immediate relief for malaria. 



C. Iron ok Chalybeate Waters. 



35. Zwartkops. 



The water issues from a borehole in the Uitenhage beds, at 

 a dej)th of 3.600 feet. The temperature is 130° F., an unusally 

 high temperature for a chalybeate s])ring. and 10° above that of 

 Caledon. The daily yield is 165,000 gallons. There are at present 

 eight trial bathrooms in service, and there is accommodation for 

 a limited number of visitors, but the establishment of a properly 

 equipped sanatorium is contemplated. Cures have been effected 

 in cases of rheumatism, eczema, dyspepsia, gallstones, kidney 

 troubles and female complaints. The water is reported to be 

 highly radio-active. It is the only South African chalybeate 

 spring containing sul])huretted hydrogen, namely, 0.124 of a 

 gram per 100,000, and it contains, in addition, 6.662 grams of 

 free carbon dioxide per 100,000. The spring was discovered in 

 1909, when drilling for pretroleum The gases in solution have 

 l)€en analysed by Sir J. Dewar. The composition of the gas 

 is as follows: — 



