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 such as apple; some have many branches, and their greater mass of growth high up, as the pomegranate: however! training position and cultivation chiefly contribute to all of these characters. In proof of which we have the fact that the same trees which, when growing close together, are tall and slender, when grown farther apart become stouter and shorter; and if we from the first let the branches grow freely, the tree becomes short, whereas, if we prune them, it becomes tall,—for instance, the vine.

This too is enough for proof that even some potherbs acquire the form of a tree, as we said" of mallow and beet. Indeed all things grow well in congenial places For even among those of the same kind those which grow in congenial places have less knots, and are taller and more comely: thus the silver-fir in Macedon is superior to other silver-firs, such as that of Parnassus. Not only is this true of all these, but in general the wild woodland is more beautiful and vigorous on the north side of the mountain than on the south.

Again some trees are evergreen, some deciduous, Of cultivated trees, olive date-palm bay myrtle a kind of fir and cypress are evergreen, and among wild trees silver-fir fir Phoenician cedar yew odorous cedar the tree which the Arcadians call 'cork-oak' (holm-oak) mock-privet prickly cedar 'wild pine' tamarisk box kermes-oak holly alaternus cotoneaster hybrid arbutus (all of which grow about Olympus)