47 
RUBBER IN AFRICA. 
A special survey is being made of the chief rubber produc- 
ing districts of French West Africa, and as one of the safe- 
guards being adopted to protect the industry, when the investi- 
gation is finished, depleted areas will be closed to rubber collec- 
tion until the plants have recuperated. 
ROTATION OF CROPS ON TOBACCO LAND. 
The following three course rotation for tobacco land is ad- 
vocated in the Tropical Agriculturist by C. Drieberg, secretary, 
Ceylon Agricultural Society: 
1. Tobacco. 
2. A leguminous crop, e. g. : 
a Green gram (mun) Phascolus Max. 
b Black gram (ulundu) Phascolus radiatus. 
c Bengal gram (kadala) Cicer aricntinum. 
d Horse gram (kollu) Dolichos biflorus. 
c Common bean (bonchi) Phascolus vulgaris and 
luntatus. 
f Dwarf long bean (gas-me) Vigna catiang. 
g Ground nuts (rata-kaju) Arachis hypogoca. 
h Dhall (rata-thora) Cajanus indicus. 
t Sunn hemp (hane) Crotalaria juncca. 
N. B. — The plants to be dug into the soil after the crop 
is harvested. 
3. Grain Crop. 
a Paddy (if possible) Oryza sativa. 
b Kurakkan — Elcusinc coracana. 
c Amu — Paspalun scrobiculatum. 
d Mineri — Panicum miliarc. 
c Tanahal — Sciaria italica. 
f Species of Sorghum, 
g Indian corn (bada iringu) Zca Mays. 
N. B. — The straw to be returned to the land after har- 
vest. 
BEES IN CEYLON. 
P>ees in Ceylon appear to make much use of flowering shrubs 
and herbaceous plants. The coconut, which is always in 
flower, appears to be their chief source of honey in the low 
country, but they also take advantage of the flowering season 
of the Mango, Padowk fPtcrocarpus indica). Buhl (Tcrminalia 
belerica) and Henna (Lowsonia alba). Among garden flowers 
Cosmea, Portulaca and Sunflowers are frequented. The Lan- 
tana does not appear to be made use of, although its name 
occurs in a list of West Indian bee plants. 
