“We got down on our knees,” said John D. Rust last week, “and picked cotton when we were boys. We decided then that we would try to invent a machine that would do this back-breaking toil. We have that ...

A blazing sun beat down one day last week on the Mississippi delta cotton fields as hundreds of white-shirted, straw-hatted plantation owners, managers, ginners, dealers, bankers, scientists and ...