Contents

30 August 1974
Vol 185, Issue 4153

About The Cover

Eocene angiosperm flowers from Middle Eocene sediments, approximately 50 million years old. Pollen has been isolated from the anthers of these flowers. Assorted flowers have been collected in Eocene and Cretaceous clay deposits in western Tennessee and Kentucky. See page 781. [W. L. Crepet, D. L. Dilcher, and F. W. Potter, Indiana University, Bloomington]