Thornton Wilder is best remembered as the author of Our Town and The Matchmaker, the basis for the musical Hello, Dolly! But his third great play, The Skin of Our Teeth, directed by Elia Kazan in 1943, won the Pulitzer Prize, yet the tragicomedy is more spoken about than seen, perhaps because its demands are formidable. Wilder, a great experimentalist, uses every trick in the book to chart the survival of mankind, in the persons of the Antrobus family of Excelsior, N.J., through the Ice Age, the Flood, untold wars and starving refugees.