{TALK 
        {"October 2}
        {"The Gr\"unbaum--Dress Polyhedra}
        {"Egon Schulte} 
        {"Northeastern University}
        {"}
        {"Regular polyhedra have been investigated since antiquity.
In ordinary euclidean 3-space, the class of regular polyhedra has been
considerably extended to what are now called the Gr\"unbaum--Dress
polyhedra.  The talk presents a new approach to these polyhedra, which
also leads to a quicker proof of the completeness of the enumeration
than that found by Dress.  Presentations of their symmetry groups will
also be discussed.  This is joint work with Peter McMullen.}  }