370 
Transactions of the Boyal Society of South Africa. 
DIVISION (2). 
Section (a). — This happened upon 2 occasions ; we shall not be safe in 
issuing any prediction until we have more cases to guide us. This also 
applies to Sections (b) and (c), under each of which only 1 case occurs. 
Prediction (Provisional). — Dry weather, but uncertain. 
DIVISION (3). 
Section (a). — This happened upon 12 occasions, and rain followed only 
upon 2 ; wind was generally easterly. 
Section (b). — This happened upon 3 occasions, and no rain followed ; 
wind w^as easterly. 
Section (c). — This occurred 9 times and rain followed only upon 1. 
Peediction for Division. — Dry weather. 
SUB-GEOUP (D). 
This may be the prelude to a falling glass at L'Agulhas, due to a 
winter type depression, or it may be the result of a summer type one low 
down on the triangle, skirting a high pressure to the north and south. In 
the former case the reading at L'Agulhas will be actually lowest, and the 
fall at the Eoyal Observatory will be due to a southern depression. In 
the latter case the reading at the Eoyal Observatory will be lowest. If a 
summer type depression is affecting us the low^est readings will be at 
Clanwilliam, and this will bring down the glass at the Eoyal Observatory, 
but the influences will be for dry weather. 
DIVISION (1). 
Section (a). — We have 14 cases in the 5 years, and on 8 of them rain 
followed ; on the other 6 rain should have followed. Wind was westerly 
in the majority of cases, both for wet and dry weather. 
Peediction. — Wet weather. 
Section (b). — This only happened upon 4 occasions, and after 3 of them 
rain followed. Wind was northerly. 
Peediction. — Wet weather. 
Section (c).— This only happened upon 3 occasions, and only on 1 of 
them did 0-02 in. of rain fall. 
Prediction. — Dry weather. 
DIVISION (2). 
Section (a). — This happened upon 5 occasions, and rain followed only 
upon 1 of them, and then only 0 02 in. fell. 
