The revenue amounted in 1913 to $531,500. The imports in 1912 were $1,667,857 and the exports $1,199,152. The latter consisted chiefly of rubber, palm oil and kernels, coffee, piassava fiber, ivory, ginger, camwood, and arnotto.
"The Negro"
W.E.B. Du Bois
In some cases the methods of mordanting, dyeing and saddening are combined together in the dyeing of wool, thus, for instance, a brown can be dyed by first mordanting with bichrome, then dyeing with camwood and saddening in the same bath with copperas.
"The Dyeing of Woollen Fabrics"
Franklin Beech
Moreover, the natives, always preferring the excitement of war to the labors of peace, neglect the culture of the earth, and have no camwood nor palm-oil to offer to the honest trader, who consequently finds neither buyers nor sellers among them.
"Journal of an African Cruiser"
Horatio Bridge