176 CHEMICAL COMPOSITION OF RAIN. 



latter and tlie simultaneously collected Cedara sample, this had 

 no appreciable effect, it was thought that an improvement in the 

 collecting appliances might be effected by tying a piece of muslin 

 (weighted down by a small stone in the middle) or wire gauze 

 over the rain gauge, or else by placing over the gauge a per- 

 forated lead disc. 



The collection of the samples in the fifteen selected centres 

 was undertaken by the following : — 



Cape Province : 



Retreat : The Secretary, Meteorological Commission. 

 Calvinia : (No samples were recei\'ed at the Cape Town 



Laboratory)."^ 

 Douglas: Mr. A. C. Martin, Water Bailiff. 

 Kokstad : ^Ir. H. D. Coyte, Attorney. 

 Grahamstown : The Gaoler. 

 Cradock : Tlie (Gaoler. 



Transvaal'. 



Johannesburg : The Director, Meteorological Observa- 

 tory. 



Potchef stroom : Mr. T. Reinecke, l>ecturer in Cliemistry, 

 Government School of x\griculture. 



Ermelo : Mr. A. C. Drummond, Forester. 



Orange Free State : 



Bloemfontein : Mr. J. Lyle. Principal, Grey College 



School. 

 Lindleyf: Mr. John Oates. 

 Modderpoort : The Provincial, St. Augustine's. 



Natal : 



Cedara : The Chemist, Government Experiment Farm. 



Weenen : The Officer in charge, Government Experi- 

 ment Farm. 



Durban : The Director of the Natal Observatory. 

 Of the Cape Province samples those from Retreat, Calvinia 

 and Douglas were assigned to the Cape Town Laboratory, while 

 the Kokstad, Cradock and Grahamstown samples were analysed 

 at Grahamstown. The Transvaal samples were allotted to the 

 Pretoria laboratory, and those of the Orange Free State were 

 examined in the laboratory at Bloemfontein. The Durban 

 laboratory dealt with the Natal samples. In all 127 samples of 

 rain water were analysed in pursuance of the scheme of investi- 

 gation outlined above, the results of the analyses being given in 

 the following: tables: — 



* Samples were collected, but the transport riders refused to convey 

 them as their wagons were generallj' loaded with wool and skins in charge 

 of natives. 



t The Lindley samples were never received at the Bloemfontein labora- 

 tory. 



