That wretched box of dynamite proved a curse to the island. The natives, despite my friend's accident, bought every cartridge from him, singly or in lots, and they then began to enjoy themselves. Every hour of the day for many weeks afterwards the sullen thud of the explosive could be heard from all parts of the lagoon, followed by applauding shouts. Vast numbers of fish were blown to pieces, for no native would ever think of dividing a cartridge into half a dozen portions and using only one at a time; the entire 6-oz. cartridge was used, and sometimes so short were the fuses, that explosions would take place on the surface, to the delight of the children, who said, “it was as good to hear as the cannons of a man-of-war.” In the short space of eight weeks there were five serious accidents, two of which ended fatally. I was thankful when the last charge had been exploded, and although the natives begged me to import a fresh supply, I always declined—not on their account only, but because of the wanton destruction of fish involved.
One day I decided to try and ascertain if oap would affect fish by being swallowed. I prepared twenty or thirty small balls of the plant, wrapped each one up carefully in thin strips of fish flesh, so as to thoroughly conceal the contents, and took them out to the “turtle dock.” The dock, although it was a safe enclosure for turtle, yet had many small passages through the coral rock which permitted the ingress and exit of moderately-sized fish, particularly a variety of black and red-spotted rock-cod.
Throwing in the balls, one by one, I watched. Three of them were at once swallowed by a lively young hawk-bill turtle, and the remainder were soon seized by some yellow eels and rock-cod, before the larger and slower-moving turtle (of which there were about twenty in the dock) discerned them. I waited about on the reef in the vicinity for quite three hours or more, returning to the pool at intervals and examining the condition of its occupants. But, at the end of that time, the oap had apparently taken no effect, and, as night was near, I returned to the village.
On the following morning, I again went to the “dock,” lowered my line, and caught six rock-cod. In the stomachs of two I found the undigested fibres of the oap which, through expansion, they had been unable to dislodge; but that it had not had any effect on them I was sure, for these two fish were as strong and vigorous when hooked as were the four others in whose stomachs there was no sign of oap.
The young hawkbill turtle, however, was floating on the surface, and seemed very sick.
Here is a point for ichthyologists. Are the digestive arrangements of a turtle more delicate than those of a fish?