40 
have acclimatised in a manner profitable from the 
agricultural ccn any other species of rubber tree, 
e.g., Manihot Glazio 
Article 2. A premium of 45 contos of reis to whoever shall 
show that within the same time he has devised the best 
method of extracting the latex. 
Although but little is known so far of the cultivation of 
M ; ^ 
under the rough treatment of the Indians it preserves its fruit- 
fulness, and also the facility with which it can be cultivated, 
promise a future. And, taking a wide view of its possi bilities, 
rman Colonies of — a, Usambara and Togoland alike, such, 
for instance, as occur at Misahóhe, in the latter colony. For 
these soils it promises to be considerably a suited than the 
Ceara rubber plant (Manihot Glaziovit), and the Para rubbers 
(Hevea), and will probably give better tnia I sc gati than 
which it is more hardy, earlier maturing, and smal 
XV.—FORSTERONIA RUBBER. 
(Forsteronia gracilis, Benth.) 
[ K.B., 1888, pp. 69-71.] 
The flora of British Guiana is in course of being. carefully 
and Brain investigated by Mr. Jenman, the Government 
Botanist and Superintendent of the Botanic Garden at George- 
itic: i ied on a 
s 
Kew, where typical specimens are added to the collections of 
Guiana plants already existing in this establishment. Among the 
plants for which we are indebted to the zeal and sagacity of Mr. 
Jenman there are many of economic value. Recently we received 
from him dried botanical specimens and sample of rubber from a 
plant locally called Macwarrieballi, not hitherto known to yield 
utcho tanical examination of t e specimen by 
Professor Oliver proved that this plant was a species of Forsteronia 
(F. gracilis, Benth.), a genus of Apocynaceae. This family is 
twining plant, the stem of which trails on the floor of the forest, 
snake-like, and the head spreads over the tops of the highest trees 
ed " He continues: “the flowers are not quite out. I send 
so a ‘sample of the rubber, which, if you could obtain a report 
ang I should be greatly obliged. It is discoloured from the creek 
water in which it was washed, the only kind of water that was 
