tailieunhanh - THE STORY OF THE HEAVENS

I have to acknowledge the kind aid which I have received in the preparation of this book. Mr. Nasmyth has permitted me to use some of the beautiful drawings of the Moon, which have appeared in the well-known work published by him in conjunction with Mr. Carpenter. To this source I am indebted for Plates VII., VIII., IX., X., and Figs. 28, 29, 30. Professor Pickering has allowed me to copy some of the drawings made at Harvard College Observatory by Mr. Trouvelot, and I have availed myself of his kindness for Plates I., IV., XII., XV. . | THE STORY OF THE HEAVENS PLATE I. THE PLANET SATURN IN 1872. THE Story of the Heavens SIR ROBERT STAWELL BALL . . Author of Star-Land FELLOW OF THE ROYAL SOCIETY OF LONDON HONORARY FELLOW OF THE ROYAL SOCIETY OF EDINBURGH FELLOW OF THE ROYAL ASTRONOMICAL SOCIETY SCIENTIFIC ADVISER TO THE COMMISSIONERS OF IRISH LIGHTS LOWNDEAN PROFESSOR OF ASTRONOMY AND GEOMETRY IN THE UNIVERSITY OF CAMBRIDGE AND FORMERLY ROYAL ASTRONOMER OF IRELAND WITH TWENTY-FOUR COLOURED PLATES AND NUMEROUS ILLUSTRATIONS NEW AND REVISED EDITION CASSELL and COMPANY Limited LONDON PARIS NEW YORK MELBOURNE 1900 ALL RIGHTS RESERVED PREFACE TO ORIGINAL EDITION. I have to acknowledge the kind aid which I have received in the preparation of this book. Mr. Nasmyth has permitted me to use some of the beautiful drawings of the Moon which have appeared in the well-known work published by him in conjunction with Mr. Carpenter. To this source I am indebted for Plates VII. VIII. IX. X. and Figs. 28 29 30. Professor Pickering has allowed me to copy some of the drawings made at Harvard College Observatory by Mr. Trouvelot and I have availed myself of his kindness for Plates I. IV. XII. XV. I am indebted to Professor Langley for Plate II. to Mr. De la Rue for Plates III. and XIV. to Mr. . Key for Plate XVII. to Professor Schiaparelli for Plate XVIII. to the late Professor C. Piazzi Smyth for Fig. 100 to Mr. Chambers for Fig. 7 which has been borrowed from his Handbook of Descriptive Astronomy to Dr. Stoney for Fig. 78 and to Dr. Copeland and Dr. Dreyer for Fig. 72. I have to acknowledge the valuable assistance derived from Professor Newcomb s Popular Astronomy and Professor Young s Sun. In revising the volume I have had the kind aid of the Rev. Maxwell .

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