Minutes of Proceedings. 
xxi 
The observing of the rainfall on Table Mountain was begun in January, 
1881, by the late Mr. John G. Gamble, M.A., hydraulic engineer to the 
Cape Colony. For the first three years there were only two stations in 
use, Disa Head and Waai Kopje ; but in 1884 the number was increased 
by another two, Kasteel Poort and St. Michael's. In 1892 seven additional 
stations were selected, bringing the total number up to eleven. 
The positions of the stations were shown on a map of the Mountain, 
and the heights above sea-level and other data were given in two 
tables. 
An examination of the data showed that the difference between the 
rainfall observed at Disa Head and Waai Kopje for the periods of 27 and 
30 years was inappreciable, and a comparison of the data for the eleven 
years, 1893 to 1903 inclusive, with that available for 27 years gave the 
following : — 
Average Yearly Rainfall in Inches. 
Kasteel Poort. 
(2,483) 
61-74 
61-09 
{Note. — The figures in parentheses are the heights above sea-level.) 
It may therefore be said that in so far as the determining of the 
average annual rainfall is concerned, the statistics for the 11 years, 1893 
to 1903 inclusive, are as suitable as the data obtained over the period of 
30 years. 
The first year of the 11-year period was, with one exception (1896), the 
driest year which has been recorded on Table Mountain, and the three 
following years, 1894, 1895, and 1896, were the three consecutive driest 
years. The wettest year of which there is any record, viz., 1902, is also 
included in the 11-year period. 
The summit of the Mountain (Maclear's Beacon gauge) is the wettest 
place, according to the records ; the rainfall at this gauge for the driest 
year (1896) was 73*34 inches, and for the wettest year (1902) 126-18 inches. 
The heaviest rainfall recorded for any month fell on the summit during 
August, 1899, and amounted to 36'58 inches. 
" On Tidal Phenomena in Wells near Cradock," by Professor A. Young. 
Observations begun in 1905 and carried on at intervals until the 
present year, on a group of wells on a farm at Tarka Bridge, Cradock 
District, are described in detail. 
The wells have not been bored very deep, the deepest being 225 feet, 
but it is obvious that the bores connect with deeply extending fissures as 
the waters issue at temperatures of about 80 degrees, accompanied by large 
^ears Period. Waai Kopje. St. Michael's. 
— ' — (3,100) (8,050) 
27 1885-1911 67-63 75-24 
11 1893-1903 68-03 75*54 
