The Sun's Place in Nature

1897. Contents: Book I. Introductory: Our Present Observing Power; The Prismatic Camera; The Discovery of Helium; The Discovery of a Terrestrial Source of Helium. Book II. Nebulae and Stars: The Relation of Nebulae to Stars; The Chemistry of the Nebulae; The Nature of Nebulae; Many So-Called Stars are Nebulae; Double Swarms. Book III. New Stars: Eye Observations of New Stars; The Meteoritic Theory of the Origin of Novae; Photographic and Eye Observations of Nova Aurige; How the Hypothesis has Fared. Book IV. The Sun's Place Among the Stars: The New Classification of Stars and Nebulae; The New Classification Tested by Photographs; Some New Laboratory Work; Application of the New Laboratory Work to Stellar Classification; Application of the New Criteria; and A Test Case between the Rival Hypotheses. See other titles by this author available from Kessinger Publishing.