The Rainfall of South Africa. 
383 
DIVISION (3). 
Section (a). — No cases. 
Section (b). — There are only 2 cases, 1 followed by dry, and the other 
by wet weather. 
Section (c). — We have 8 cases, 6 being followed by rain ; on the 2 
other occasions clearing-up showers after a winter type depression would 
have been looked for. 
Peediction for Division. — Wet weather. 
SUB-GEOUP (E). 
This can be brought about by a high-pressure area approaching from 
the west or north-west, leaving the gradient at L'Agulhas open to the 
south and south-east. Of course, as in other groups, pressure might have 
been exceptionally low to the west or north-west, causing the rapid rise to 
appear as a bank of approaching high pressure, when such was not the 
case. 
DIVISION (1). 
One case in each section, followed by dry weather. 
Prediction for Division. — Dry weather. 
DIVISION (2). 
Section (a). — Here we have 3 cases ; 2 were followed by dry weather, 
and 1 by rain ; the conditions were not for rain, and only 0*05 in. 
fell, although it rained at L'Agulhas. 
Section (b). — This happened upon 16 occasions, rain following only 
twice ; on one of these occasions the fall was only 0'02 in. 
Section (c). — This condition was present upon 26 occasions, and after 
20 of them dry weather followed ; out of the 6 exceptions only 1 was 
abnormal, and no rain would have been predicted ; the other 5 were 
due to the fact that winter type depressions had just passed, and the 
glass at L'Agulhas was low ; in none of these 5 cases did much rain fall at 
the Eoyal Observatory, but in each rain fell at L'Agulhas. 
Peediction for Division. — Dry weather. Exception. — Winter 
depression at L'Agulhas. 
DIVISION (3). 
I shall refer to this later on. 
