Fig. 11.—PARA RUBBER PLANTATION, CEYLON.
Fig. 11.—PARA RUBBER PLANTATION, CEYLON.
Fig. 12.—PARA RUBBER TREES, TAPPED—CEYLON. (Spiral and V Systems.)
Fig. 12.—PARA RUBBER TREES, TAPPED—CEYLON.
(Spiral and V Systems.)
From Photographs in the Collection of the Imperial Institute.