Proceedings of the Symposium “Progesterone, Progestins, and Fetal Development”**Proceedings of the Symposium held at the Hyatt Regency Hotel, Washington, D. C., January 16, 1978. Reprints are available for $1 per copy from The American Fertility Society, 1608 13th Avenue South, Suite 101, Birmingham, Ala. 35205.††This symposium, which was sponsored by The American Fertility Society, was superbly moderated by Dr. Ronald A. Chez. His review attempts to provide a balanced, succinct, and accurate summary of the proceedings. —Editor