must note particularly any circumstance at a cross road or fork in the trail that will enable him to turn in the correct direction. Sometimes a bush, a stone, a tuft of grass will suffice to direct the traveler on his way in sections where there is not a fence or house to mark the direction he should take. The author recalls an instance when he was journeying on horseback through a sparsely settled section in southern Florida that his being able to locate a cactus plant, not a foot in height, was the only thing that saved him from taking the wrong direction where two trails crossed, and going many miles out of his way. What fastened the remembrance of the cactus on his mind was the fact that he paused to examine it, because it was the first one he had seen in Florida, and he was surprised to see it growing in that section, so he dis-
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