Minutes of Proceedings. 
xi 
describes the outstanding differences in size, colour, and type, between the 
yields of the different mines, speaks of coloured diamonds, bort, and 
especially cleavage diamonds ; and advances a view that many diamonds 
have been naturally broken by the unequal expansion of themselves and 
mineral inclusions. It appears that brown diamonds have shown a parti- 
cular disposition to come up broken from the deeper levels of the Wesselton 
mine (though the ratio of colourless cleavage to colourless stones also 
increases with depth of mining), but the author doubts the common asser- 
tion that brown or smoky diamonds are markedly liable to spontaneous 
fracture. 
" On the Phanerogamic Flora of the Divisions of Uitenhage and Port 
Elizabeth." By S. Schonland. 
This paper is meant to be a companion to the papers published by the 
late Dr. Bolus and Major Wolley Dod on the Flora of the Cape Peninsula, 
and by the late Dr. J. Medley Wood on the Flora of Natal. There are 2290 
species recorded, of which 98 are considered by the author not to be native. 
They are distributed over 128 natural orders and 712 genera. There are, 
however, still large tracts of this area unexplored. Most of the localities 
quoted are contained in about 600 sq. miles, while the total area is about 
2500 sq. miles ; much of the remaining tract is, however, covered by fairly 
uniform karroid succulent vegetation. 
" A Lunar Period in the Rates of Evaporation and Eainfall." By J. R. 
Sutton. 
This paper calls attention to the possiljility of a lunar influence govern- 
ing the evaporation from a water surface, and a lunar period in the 
incidence of a rainfall. Tables are given showing that as the result of 
hourly observations of evaporation and rainfall during the 120 lunar months 
from August, 1899, to April 1909, rainfall has its maximum frequency 
about the time of moonrise, and its minimum just after moonset ; also that 
the rate of evaporation has a maximum and a minimum, respectively shortly 
after the moon passes the meridian above and below the horizon. 
Annual Meeting. 
The Annual Meeting was held on Wednesday, September 26th, 1917, at 
8.15 p.m., in the Board Room of the South African Association, Churcli 
Square, Capetown. 
The President, Dr. L. Peringuey, was in the Chair. 
Dr. Charles Edward Moss, M.A., D.Sc, B.Sc, F.L.S., F.R.a.S., 
proposed by Joseph Burtt-Davy, R. T. A. Innes, R. B. Young and 
A. Ogg, and — 
