Water, dearth of, 128, 161, 163, 166, 168, 169, 341, 366; loss of, inevitable, 131; speed of flow of, 375; from polar caps, 340, 374.
Water-vapor, from polar caps, 83; in atmosphere, 162, 168.
_Wedge of Casius_, 242; canals in, 247; oases in, 251, 252, 256.
White spots, 32, 165; similar in look to polar caps, 73; location and season of, 74, 76-79, 80, 81;
White spots, permanency of, 73, 76; indication of temperature, 80, 165.
World, Mars another, 4, 5, 169; evolution of a, 16, 128, 131, 155-158, 358.
A COMPENDIUM OF SPHERICAL ASTRONOMY With its applications to the determination and reduction of positions of the fixed stars By SIMON NEWCOMB
CHAPTER I. INTRODUCTORY. NOTES AND REFERENCES.
CHAPTER II. DIFFERENCES, INTERPOLATION, AND DEVELOPMENT. NOTES AND REFERENCES.
CHAPTER III. THE METHOD OF LEAST SQUARES. Section I. Mean Values of Quantities. II. Determination of Probable Errors. III. Equations of Condition. NOTES AND REFERENCES.
PART II. THE FUNDAMENTAL PRINCIPLES OF SPHERICAL ASTRONOMY
CHAPTER IV. SPHERICAL COÖRDINATES. Section I. General Theory. II. Problems and Applications of the Theory of Spherical Coördinates.
CHAPTER V. THE MEASURE OF TIME AND RELATED PROBLEMS. Section I. Solar and Sidereal Time. II. The General Measure of Time. III. Problems Involving Time.
CHAPTER VI. PARALLAX AND RELATED SUBJECTS. Section I. Figure and Dimensions of the Earth. II. Parallax and Semi-diameter.
CHAPTER VIII. ASTRONOMICAL REFRACTION. Section I. The Atmosphere as a Refracting Medium. II. Elementary Exposition of Atmospheric Refraction. III. General Investigation of Astronomical Refraction. Notes and References to Refraction.
CHAPTER IX. PRECESSION AND NUTATION. Section I. Laws of the Precessional Motion. II. Relative Positions of the Equator and Equinox at Widely Separated Epochs. III. Nutation. Notes and References to Precession and Nutation.
PART III. REDUCTION AND DETERMINATION OF POSITIONS OF THE FIXED STARS
CHAPTER X. REDUCTION OF MEAN PLACES OF THE FIXED STARS FROM ONE EPOCH TO ANOTHER. Section I. The Proper Motions of the Stars. II. Trigonometric Reduction for Precession. III. Development of the Coördinates in the Powers of the Time. NOTES AND REFERENCES.
CHAPTER XI. REDUCTION TO APPARENT PLACE. Section I. Reduction to Terms of the First Order. II. Rigorous Reduction for Close Polar Stars. III. Practical Methods of Reduction. IV. Construction of Tables of the Apparent Places of Fundamental Stars. Notes and References.