Mars: Sinus Titanum; November, 1894 (Classic Reprint) - Tapa blanda

Excerpt from Mars: Sinus Titanum; November, 1894

This book is the result of a special study of the planet made during the last Opposition, at an observatory put up for the purpose of get ting as good air as practicable, at Flagstaff, Arizona. A steady atmosphere is essential to the study of planetary detail: size of instru ment being a very secondary matter. A large instrument in poor air will not begin to show what a smaller one in good air will. When this is recognized, as it eventually will be, it will be come the fashion to put up observatories Where they may see rather than be seen.

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PREFACE THIS book is the result of a special study of the planet made during the last opposition, at an observatory put up for the purpose of getting as good air as practicable, at Flagstaff, Arizona. A steady atmosphere is essential to the study of planetary detail: size of instrument being a very secondary matter. A large instrument in poor air will not begin to show ""hat a snlaller one in good air will. When this is recognized, as it eventually will be, it will become the fashion to put up observatories where th'ey may see rather than be seen. Next to atmosphere comes systematic study. Of the extent to which this was realized at Flagstaff, I need only say that the planet was observed there fronl May 24, 1894, to April 3, lS9[i, during which time, to mention nothing else, 917 drawings and sketches were Inade of it. . Prof. W. H. Pickering and ~rr. A. E. Douglass were associated with me in the observations herein described. Such as care to see the original dat

Table of Contents

CONTENTS; CHAPTEB; I GESERAL CHARACTERISTICS; 1 As a Star ; 2 OrLit; 3 Size and Shape ; II A nlOSPlIERE; 1 Evidence of it; 2 Clouds ; III 'VATER •; 1 The Polar Cap; 2 Areography; 3 Seas; IV CA~ALS •; 1 First Appearances; 2 Map and Catalogue; 3 Artificiality ; 4 Development; V OASES; 1 Spots in the Light Regions; 2 Double Canals; 3 Spots in the Dark Regions ; VI CONCLUSION; ApPENDIX; INDEX •; PAGB; 1; 1; 8; 14; 31; 31; 60; 76; 76; 92; · 107; 129; • 129; ltl; 148; 154; · 176; 176; 188; 197; · 201; 213; · 223 LIST OF ILLUSTRATIO~S; PLATE PAGB; 1 iLU!S, ~IXL'~ TITAXe~[ Colored Frontispiece; ~ ()H~llllJ('l', 18U'! (P L); ORBITS OF ~LR~ A~D THE EARTH 11; IIeY(lIIExs' IhLWIXG OF TIlE ~Yl{TIS :LJOR ~1; ~ o"emlH'l' :28, tG5!); (Froil/ FlammarioJ/'s " La Tlflitl:te Jlars"); TEIOII~ATOR EFFECTS 38; (P L); II lIAP OF THE SOUTH POLE OF }LHS 84:; II