A special issue of the Journal of Geophysical Research—Solid Earth and Planets will be devoted to the topic "Helium Studies in Geology." Both helium isotopic research and helium 4 investigations on any phase of geologic application will be included. Individuals are welcome to submit manuscripts for this special issue. The deadline for receipt of papers through the normal JGR submission process is May 30, 1986. Please indicate that the manuscript is for the special issue. For additional information, contact G. M. Reimer, U.S. Geological Survey, MS 963, Denver Federal Center, Denver, CO 80225; telephone: 303236-7886 or JGR editor Gerald Schubert, Department of Earth and Space Sciences, University of California, Los Angeles, CA 90024; telephone: 213-82 5-4577.