Vlll CONTENTS. 



and Sporer Career and work of Fraunhofer Spectrum 

 analysis Work of Kirchhoff Solar eclipse work The 

 Solar prominences Janssen and Lockyer Huggins and 

 Zollner Work of Young The Italian spectroscopists, 

 Secchi, Eespighi, Tacchini Career of Tacchini The re- 

 versing layer The Corona Doppler's principle Rota- 

 tion of the Sun Work of Dune"r Janssen's solar atlas 

 Maunder and magnetism Solar theories Distance of the 

 Sun Summary . . . . . .43 



CHAPTEE IV. 



THE MOON. 



Life and work of Schroter Of Madler Of Schmidt- 

 Changes on the Moon Selenography in England 

 Lunar atmosphere Lunar photography Work of W. H. 

 Pickering The new Selenography The Moon's heat 

 Motion of the Moon Acceleration of the Moon's mean 

 motion Work of Laplace, Adams, Delaunay . . 65 



CHAPTER V. 



THE INNER PLANETS. 



The problem of Vulcan Mercury Work of Schroter 

 Schiaparelli, his life and work Work of Lowell 

 Spectrum of Mercury Venus Rotation period : work 

 of Schroter, Di Vico, Schiaparelli, Tacchini, Lowell 

 Atmosphere and surface of Venus The Earth : variation 

 of latitude Mars Rotation of Mars Surface Discovery 

 of canals Work of Schiaparelli and Lowell Interpreta- 

 tion of the canals The theory of intelligent life Spectrum 

 of Mars Satellites The Asteroids Bode's law Work 

 of Piazzi and Olbers Application of photography by Wolf 

 Discovery of Eros . . . . . .80 



