Proceedings of the South African Philosophical Society. li 
Messrs. R. O. WynNE Roperts, Cape Town, and T. N LeEsuin, 
Vereeniging, were elected ordinary members of the Society. 
Mr. Garwoop Auston showed three photographs of stones stand- 
ing erect about six miles south of Port Nolloth, near which Mr. R. 
Colson, of the Customs Department, found certain kitchen-middens, 
from which a skull and several native pots and grinding stones were 
_ obtained. The stones form enclosures of 4 feet by 2, running 
north and south. Two of the enclosures were dug into, but yielded 
nothing. The underlying indurated sand seemed to be quite undis- 
turbed. Mr. Alston emphasised the absence of evidence as to the 
meaning of the enclosures, and said that the small size was against 
the view that old burial-places are indicated. 
Professor J. T. Morrison communicated a paper on ‘Some 
Pressure and Temperature Results for the Great Plateau of South 
Africa,” by J. R. Surron, M.A. (Cantab). 
Dr. J. C. Beatris referred to the assistance which work like that 
of Mr. Sutton afforded for weather forecasting—a matter which had 
not yet become possible in South Africa. 
Mr. T. Stewart congratulated Mr. Sutton on the valuable work he 
had done, but pointed to the danger incurred in comparing Kim- 
berley with Cordoba or Adelaide, unless the topography was also 
considered. 
Mr. C. Stewart pointed out that the drawing of Isobars, or lines 
of equal pressure, from which forecasts could be made, depended on 
a knowledge of the rate of decrease of temperatures with increase of 
height above the sea. While this has been ascertained with con- 
siderable accuracy in regard to free air, from observations taken on 
mountains, and by means of kites and balloons, our knowledge of the 
similar decrease over plateaux such as constitute the main part of 
South Africa, was still very deficient. Mr. Stewart pointed out that 
the temperature curve of Port Nolloth showed in August a similar 
sudden rise to that given by Mr. Sutton for July at Kimberley. 
This he ascribes to the easterly winds then prevailing at Port 
Nolloth, being strongly heated when passing over the Kalahari. 
Mr. Garwoop AustTon stated that along the north of the Colony 
the hot winds were N.W. at Kimberley, N.at Kenhardt and Prieska, 
and HK. at Port Nolloth, and referred to this as being evidence in 
favour of the late Mr. Gamble’s view that the Kalahari Desert was a 
centre of high pressure whence these winds spread outward. 
Professor Morrison said that he had, with Mr. C. Stewart’s help, 
made a comparison of the daily pressure at Cape Town with that at 
Kimberley and Durban as given by Mr. Sutton, and had found that 
while the several places showed the same changes, Cape Town was 
