After graduating from Yale, Whitney went south to teach school, and while visiting on a Georgia plantation he invented the cotton gin, a machine which put an end to the old method of separating seeds from the cotton by hand.

• 惠特尼从耶鲁大学毕业以后，在南方任教。 他在参观佐治亚州一个种植园的时候，发明了轧棉机。 于是，手工脱籽的旧方法至此告终。