370 Transactions of the Royal Society of South Africa. 
Blockhouse, at 1500 ft., 58-67 in. The slopes of Table Moantain show the 
same tendency, the rainfall at St. Michael's (I, 71) being not far short of 
76 in. a year, while Disa Head, a dry station for its altitude, more than 500 ft. 
lower, has only 40 in. So far as is known the wettest place in the penin- 
sula is Maclear's Beacon on the top, and near the eastern escarpment of the 
mountain (I, 16A), with an annual average of 89-30 in." 
The annual curve of rainfall is fairly simple, with a maximum in June 
and a minimum in February. But there is just a tendency towards a small 
secondary maximum in August, in response to continental conditions. 
II. South-Western Ca/pe Province. 
This area includes the districts of Caledon, Stellenbosch, Paarl, Eobertson, 
Tulbagh, Ceres, and Worcester south of the Hex River. The mean annual 
rainfall varies from 11-43 in. at Worcester (II, 38) to 40-89 in. at Ceres 
(II, 21), only twenty miles aw^ay. The majority of the stations have upwards 
of 20 in. a year. Probably one of the wettest stations in South Africa is 
situated in this area, i. e. at Berg River Hoek, No. 9 Gauge, on the western 
slope of the Hottentot's Holland Mountains, in lat. 33° 55', long. 19° 4'. 
The altitude is not given. Two years of observation at this spot gave a mean 
rainfall of no less than 115 in. a year. 
The annual curve of rainfall resembles that of I, but the August maximum 
is more strongly marked. 
III. Western Cape Province. 
Comprises the whole western side of Cape Colony from Bok Point to the 
Orange River. It has been subdivided here into III A (Namaqualand), and 
III B (the districts of Van Rhyns Dorp, Clanwilliam, Piquetberg, and 
Malmesbury). The rainfall decreases rapidly as we go north, ranging all 
the way from 24-21 in. at Saron (III B, 57) to 2-28 in. at Port Nolloth 
(III A, 47). For Namaqualand, Lilyfontein has quite an exceptional 
rainfall. 
The August maximum, though quite obvious, is somewhat more uncertain 
^ than it is in II. Also as we go north we find a retrogression of the first 
maximum into May, and a corresponding retreat of the minimum into 
January ; inland, at Pella (III A, 46), the maxima one in March and October, 
the minima in July and November. 
IV. Southern Cape Province. 
Comprises the whole of the south coast districts of Cape Colony from 
Cape Agulhas to Algoa Bay. The rainfall increases gradually on the whole 
* See T. Stewart, "The Eainfall of Table Moimtain/' 'Trans. R. Soc. S. Afr./ iii, 
1913. The averages for the "Additional Stations" are taken from this paper. As 
much as 3(}-o8 in. in one month (August, 1899) has been recorded at Maclear's Beacon. 
