The Astrophysical Journal Supplement Series (ISSN 0067-0049) is published monthly for the American Astronomical Society by The University of Chicago Press, 5801 S. Ellis Avenue, Chicago, IL 60637. Six volumes of two issues each are published each year. An author and subject index appears in the second issue of each volume. An annual index published after the last volume of the year and a cumulative index published every five years are sent to each subscriber.The Supplements are intended to provide a medium for the publication of extensive investigations, such as wavelength lists of stars of special interest, photometric data, results of numerical integrations pertaining to stellar interiors, model stellar atmosphere calculations, and original memoirs.