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How Trees Are Multiplied — Part 1
NATURE begrudges man all the land he has cleared of forests. and if he relaxes his vigilance--lets a field lie fallow a year or two--the forest begins to encroach, and takes it back. Every year trees flower and fruit, and young saplings come up wherever there is room and a chance in the woods. But here there is crowding and struggling even among the large trees, and the saplings die unless they can live under the shade of larger trees.