164 Transactions of the Boyal Society of South Africa. 
Similar observations for the south-west wind wei'e as follows : — 
Jan. Feb. Mar. April. May. June. July. Aug. Sept. Oct. Nov. Dec. Total. 
A.M.... 666215224573 49 
P.M.... 24 15 17 10 10 7 6 12 8 9 17 11 146 
Here the excess rests with the evening observations. 
Both these show the influences of land and sea breeze conditions. 
An examination of the morning north-west observations shows that 
the following were the wind directions on the previous evenings : — 
Followed. N. NW. W. SW. S. SE. E. NE. C. Total. 
Times 8 22 92 7 1 5 4 7 0 146 
A similar examination of the south-west observations shows that the 
following were the previous morning directions : — 
Followed. N. NW. W. SW. S. SE. E. NE. C Total. 
Times 16 13 52 17 4 1 18 11 14 146 
It will be seen from those two tables that in the majority of cases the 
wind either veered or backed from the west, this being the prevailing wind. 
Looking at the evening north-west and the morning south-west winds, 
namely, those outside the land and sea breeze influence, it will be seen 
that the north-west was more prevalent during winter than during 
summer, but that there was a slight indication that the reverse was the 
case with the south-west winds. 
South-East and North-East Winds. 
The former, blowing from the sea, should be an evening wind, and the 
latter, blowing from the land, a morning one. The 8 a.m. and 8 p.m. 
observations were as follows : — 
Jan. Feb. Mar. April. May. June. July. Aug. Sept. Oct. Nov. Dec. Total. 
A.M.... 266221308743 44 
P.M.... 17 21 17 9 8 9 7 12 13 17 22 19 171 
The evening observations are vastly in excess of the morning ones. 
Similar observations for the north-east wind are now given : — 
Jan. Feb. Mar. April. May. June. July. Aug. Sept. Oct. Nov. Dec. Total. 
A.M.... 6 8 11 23 32 35 37 22 11 12 8 4 209 
P.M.... 0 3 0 3 15 14 16 5 2 0 4 0 62 
These were more numerous of a morning than of an evening. These 
two sets of observations clearly show the effect of land and sea breeze 
influences. 
An examination of the winds at the previous observations gives the 
following results : — 
