Meteorology of South Africa. 163 
The north 8 a.m. observations compared with the 8 p.m. ones are 
placed side by side on the following table : — 
Jan. Feb. Mar. April. Ma,y. June. July. Aug. Sejit. Oct. Nov. Dec. Total. 
A.M. ... 6 1 8 13 26 29 26 26 11 11 9 8 169 
P.M. ... 0 1 0 4 2 5 8 13 6 2 1 1 43 
An examination of this table shows that the north wind was more 
prevalent during the winter months, May to August, than during the rest 
of the year. 
A further examination shows that the following were the wind 
directions on the previous evenings : — 
Followed. N. NW. W. SW. S. SE. E. NE. C. Total. 
Times 14 12 95 20 3 16 2 2 169 
It is noteworthy to notice that the west wind changed to north more 
than any other wind. 
The south 8 a.m. and 8 p.m. observations are also placed side by side 
for comparison : — 
Jan. Feb. Mar. April. May. June. July. Aug. Sept. Oct. Nov. Dec. Total. 
A.M. ... 14651 0042034 30 
P.M. ... 7 4 8 5 2 3 2 3 4 6 7 6 57 
This is not so marked as the north wind, but the excess of evening 
observations over the morning ones can be traced. In this case there are 
more winds from this direction during summer than during the winter 
months, which is natural. 
A further examination is made, as in the case of the north wind, 
showing the wind directions on the previous mornings : — 
Followed. N. NW. W. SW. E. SE. E. NE. C. Total. 
Times 2 3 16 14 3 5 3 5 57 
The principal previous directions are from the west and south-west ; 
this is the true evening veer. 
Nokth-West AND South- West Winds. 
The former, blowing off the land, should be a morning wind, and the 
latter, off the sea, should be an evening one. If the normal direction be 
west it is evident that the cooling of the air over the land will cause a 
backing to the north-west, but when the land is heated a south-west will 
blow. 
The 8 a.m. and 8 p.m. observations for the north-west wind were as 
follows 
Jan. Feb. Mar. April. May. June. July. Aiig. Sept. Oct. Nov. Dec. Total. 
A.M. 3 11 11 9 16 12 15 18 16 17 6 12 146 
P.M. 0 1 2 3 13 7 11 3 2 6 1 2 51 
These show a great preponderance of winds from this direction of a 
morning as against those of an evening. 
