CHAPTER I Chain Disaster On Monday Bud Gregory sat in magnificent idleness before the shed which was his automobile repair-shop in the village of Brandon on the edge of the Great Smokies. That day something impalpable and invisible descended upon Cincinnati and people began to go to hospitals with their blood undergoing changes over which the doctors threw up their hands. On Tuesday Bud Gregory meditated doing some work on the four automobiles awaiting repair in his shop, but did not feel like w