IF GOD HAD A BROWNIE, He might shoot another animated short subject: blight hovering a moment before plunging down the Appalachians into the heart of chestnut country. The chestnuts up North were majestic. But the southern trees are gods. They form near-pure stands for miles on end. In the Carolinas, boles older than America grow ten feet wide and a hundred and twenty feet tall. Whole forests of them flower in rolling clouds of white. Scores of mountain communities are built from the beautiful, straight-grained wood. A single tree might yield as many as fourteen thousand planks. The stocks of food that fall shin-deep feed entire counties, every year a mast year.

Now the gods are dying, all of them. The full force of human ingenuity can’t stop the disaster breaking over the continent. The blight runs along ridgelines, killing off peak after peak. A person perched on an overlook above the southern mountains can watch the trunks change to gray-white skeletons in a rippling wave. Loggers race through a dozen states to cut down whatever the fungus hasn’t reached. The nascent Forest Service encourages them. Use the wood, at least, before it’s ruined. And in that salvage mission, men kill any tree that might contain the secret of resistance.

A five-year-old in Tennessee who sees the first orange spots appear in her magic woods will have nothing left to show her own children except pictures. They’ll never see the ripe, full habit of the tree, never know the sight and sound and smell of their mother’s childhood. Millions of dead stumps sprout suckers that struggle on, year after year, before dying of an infection that, preserved in these stubborn shoots, will never disappear. By 1940, the fungus takes everything, all the way out to the farthest stands in southern Illinois. Four billion trees in the native range vanish into myth. Aside from a few secret pockets of resistance, the only chestnuts left are those that pioneers took far away, to states beyond the reach of the drifting spores.