  The top quark, discovered at the Fermilab Tevatron collider in 1995, is the
heaviest known elementary particle. Its large mass suggests that it may play a
special role in nature. It behaves differently from the other known quarks due
both to its large mass and its short lifetime. Thus far we have only crude
measurements of the properties of the top quark, such as its mass, weak
interactions, strong interactions, and decay modes. These measurements will be
made more precise when the Tevatron begins operation again in 2001. I review
the present status of these measurements, and discuss their anticipated
improvement.
