92 
A first-class product could be obtained from this plant in Angola 
if the natives would take the trouble to clean the rubber more 
than they do. 
One-fifth of the ground traversed by the Government botanist 
between the Cubango and the Quembo, an affluent of the Cuando, 
_ The root rubber industry, entailing a great amount of manual 
labour, is essentially a black man’s industry, but the methods of 
too uncivilised at present to admit of much improvement. 
Rubber is gathered over a vast expanse of country by the natives, 
who carry it on their heads to the up-country stores where they 
barter it for other goods. These stores are situated in the populous 
centres and follow up the trade, the merchants moving from one 
district to another, as circumstances may require. In 1903, a 
European bought 26,500 lbs. of rubber in the populous valley of the 
Cuango, an affluent of the Kuito; soon afterwards three Portuguese 
factories started business on that river. The produce is likewise 
brought in by Boer wagons, the Portuguese traders using these 
conveyances ae penetrating into the unoccupied regions for 
7, Ms TH. 
hundreds of miles. 
Botanical Magazine for March—The plants figured are : 
Rehmannia Henryi, N. E. Brown (t. 8302); Aguilegia alpina, Linn. 
(t. 8303); Rhododendron mucronulatum, Turez. (t. 8304); Pitios- 
porum Colensoi, Hook, f. (t. 8305); and Notylia trisepala, Lindl. 
(t. 8306). : 
The Kehmannia was first discovered in Central China by Mr. 
Augustine Henry, and during Mr. E. H. Wilson’s last visit to the 
same region seeds of it were collected for the Director of the 
