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A similar affliction is the salt-water drum-fish, with its "bum-bum." Loanda Harbour abounds with these, and so does Chiloango. In the bright moonlight nights I have looked overside and seen these fish in a wreath round the canoe, with their silly noses against the side, "bum-bumming" away; whether they admire the canoe, or whether they want it to come on and fight it out, I do not know, because my knowledge of the different kinds of fishes and of their internal affairs is derived from Dr. Günther's great work, and that contains no section on ichthyological psychology. The West African natives have, I may say, a great deal of very curious information on the thoughts of fishes, but, much as I liked those good people, I make it a hard and fast rule to hold on to my common-sense and keep my belief for religious purposes when it comes to these deductions from natural phenomena—not that I display this mental attitude externally, for there is always in their worst and wildest fetish notions an underlying element of truth. The fetish of fish is too wide a subject to enter on here, it acts well because it gives a close season to river and lagoon fish; the natives round Lake Ayzingo, for example, saying that if the first fishes that come up into the lake in the great dry season are killed, the rest of the shoal turn back, so on the arrival of this vanguard they are treated most carefully, talked to with "a sweet mouth," and given things. The fishes that form these shoals are Hemichromis fasciatus and Chromis ogowensis. I know no more charming way of spending an afternoon than to leisurely paddle alone to the edge of the Ogowé sand bank in the dry season, and then lie and watch the ways of the water-world below. If you keep quiet, the fishes take no notice of you, and go on with their ordinary