The solar system, by W. W. Campbell.--What we know about comets, by W. W. Campbell.--A total eclipse of the sun, by R. G. Aitken.--The moon, by R. G. Aitken.--The nebulae, by H.D. Curtis.--Astronomical discovery, by H. D. Curtis.--The impo r tant epochs in the development of astronomy, by R. T. Crawfo r d.--Our nearest star, the sun, by C. E. St. John.--News fr om the stars, by R. G. Aitken.--Recent progress in the study of the motions of bodies in the solar system, by A. O. Leuschner.--The brightness of the stars, their distribution, colo r s, a nd motions, by F. H. Seares.--The 100-inch reflecting telescope, Mount Wilson