For this Tuesday Talk Colloquium, Peter Sparling will speak of his work in dance. Sparling is the artistic director of the Ann Arbor-based Peter Sparling Dance Company, and he was a principal dancer with the Martha Graham Dance Company from 1973-87. He recently returned to Graham's company for its Library of Congress performances of 'Appalachian Spring' in 1998. As a regisseur of the Martha Graham Trust, he has staged Graham's works on his own company and on companies all over the world.