(In the case of men, this activity is often athletics; in the case of women, the photographed motions are often more socially circumscribed -- the moving of a fan, for instance.) The site allows viewers to examine these sequences in miniature and full-screen sizes as well as to watch continuous animations made from the series of still frames, thus realizing Muybridge's anticipation of motion pictures. Accompanying commentary explores the technique of Muybridge's work as well as its scientific and social implications.