Word: phloem
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...worse danger than ever. Last week, the U.S. Department of Agriculture warned that the Dutch elm disease, a familiar menace in the Northeast, had spread during the war into new territory: Delaware, Kentucky, Vermont, Virginia. Sweeping out of the Middle West was an even more deadly disease, phloem necrosis, which kills thousands of elms every year...
...knows how phloem necrosis spreads. Dutch elm disease is better understood; it is a fungus carried from elm to elm by small bark beetles. They slip through the meshes of the strictest quarantine. Spraying will kill them, and the Department is experimenting with DDT and its rival, benzene hexachloride ("Gammexane" in Britain; TIME, June 24). But it is not too hopeful. There are too many elms to spray...
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