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I explored the literature of tree-climbing, not extensive, but so exciting. John Muir had swarmed up a hundred-foot Douglas Spruce during a Californian windstorm, and looked out over a forest, 'the whole mass of which was kindled into one continuous blaze of white sun-fire!' Italo Calvino had written his The Baron in the Trees, Italian editionmagical novel, The Baron in the Trees, whose young hero, Cosimo, in an adolescent huff, climbs a tree on his father's forested estate and vows never to set foot on the ground again. He keeps his impetuous word, and ends up living and even marrying in the canopy, moving for miles between olive, cherry, elm, and holm oak. There were the boys in B.B.'s Brendan Chase, who go feral in an English forest rather than return to boarding-school, and climb a 'Scotch pine' in order to reach a honey buzzard's nest scrimmed with beech leaves. And of course there was the realm of Winnie the Pooh and Christopher Robin: Pooh floating on his sky-blue balloon up to the oak-top bee's nest, in order to poach some honey; Christopher ready with his pop-gun to shoot Pooh's balloon down once the honey had been poached....
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