Novel Exhibition With Trout is Given by an Expert to Uphold This Theory.
    An expert in fish culture, who believes that fish have memories, gave a novel exhibition to support his theory.
    In one of the enclosed pools at the hatchery under his charge there was a very large trout which always came forward to see and be seen when visitors appeared. It was the expert’s custom, after calling particular attention to that trout, to raise his cane quickly and hold it over the water. The performance would have no effect upon the trout.
    Then the expert would produce a light trout rod and appear with it at the side of the pool. Instantly that trout would turn and flee, hide itself at the far end of the enclosure and remain there so long as the rod was in sight.
    This is the explanation of the sudden change in the trout’s demeanor. One day, early in the career of the fish, the expert, to try a barbless hook he had devised, cast with one in that pool, and this trout seized it. The hook penetrated and passed through its upper jaw, and by the time it was released from the hook it had undergone an experience that made a lasting impression upon it.
    The expert discovered soon after the hooking of the trout that whenever he approached the pool with his rod the trout would instantly dash to a place of hiding, although it paid no attention to a cane or other stick held over the water. The trout lived for years in that pool and never failed to show its fear of a trout rod as long as it lived.
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