Note 26 — Chapter I

Some travellers, for instance, Dr. Vogel, of the first Niger expedition, write the word ‘cocoa,’ which renders the confusion of a vegetable with a shrub and a tree inevitable to the English reader. I shall therefore write the vegetable ‘koko,’ the shrub ‘cacao,’ and the tree ‘cocoa.’ Dr. Clarke, of Sierra Leone, mentions three kinds of koko: firstly, the West Indian, or English; secondly, ‘country koko,’ acrid, and affecting the throat; and thirdly, ‘water koko,’ said to be a poisonous root.