10 November 1972
Vol 178, Issue 4061

About The Cover

Internal melting of Tyndall flowers in an ice-single crystal, viewed normal to the c-axis. When very intense radiation causes rapid internal melting,the arms do not lie lie in the basal plane (about X 26). See page 613.[C. A. Knight and N. C. Knight, National Center for Atmospheric Reseach, Boulder, Colorado]