List of Plates
List of Abbreviations
Foreword
Part I
1 The Librations of the Moon
1-1 Note on the Orbit of the Moon
1-2 The Librations of the Moon
2 Height Determinations of Points on the Moon's Surface
2-1 The Determination of Relative Heights
2-2 The Determination of Slopes
2-3 Lunar Formations in Profile
2-4 The Determination of Absolute Heights
2-5 Summary
3 The Figure of the Moon
3-1 Discovering the Non-Sphericity of the Moon
3-2 The Internal Constitution of the Moon
3-3 The Past History of the Moon
3-4 Conclusions
4 The Luminous Intensity and Luminescence of the Lunar Rocks
4-1 Relative Intensities in General. Albedo
4-2 Intensity Distribution across Full Moon
4-3 Variations in the Intensities of the Continents, the Maria, and the Rays, with Variation of Phase Angle: Models of the Surface of the Moon
4-4 Intensity Variations of Bright and Dark Spots
4-5 The Color and Intensity of the Ashen Light
4-6 Do the Moon's Rocks Fluoresce
4-7 Evidence for the Phenomenon of Luminescence
4-8 An Eruption in the Lunar Crater Alphonsus
4-9 Summary
5 The Color of Moonlight and the Composition of the Moon's Surface
5-1 Visual Work
5-2 Instrumental Methods and Results
5-3 Summary
6 On the Polarization of the Light Reflected by the Moon
6-1 Work Accomplished with Purely Optical Polarimeters
6-2 Photoelectric Polarimetry
6-3 Summary
7 On the Temperature of the Moon
7-1 Surface Temperatures from Stefan's Law
7-2 The Measurement of Surface Heat Changes
7-3 Measured Surface Temperatures
7-4 Summary of the Measured Temperatures, and Conclusions
8 The Problem of the Moon's Atmosphere
8-1 Simple Visual Observations
8-2 A Final Solution from the Kinetic Theory of Gases
8-3 Possible Evidence for an Atmosphere
8-4 Evidence from More Refined Techniques
8-5 Summary of the Estimates of the Density of the Moon's Atmosphere
9 The Probable Nature of the Moon's Surface; Changes Which Occur on the Moon
9-1 Deductions from the Size and Mass, from the Figure, and from the Surface Structures of the Moon
9-2 Deductions from the Intensity Variations and from the Color of Moonlight
9-3 Deductions from the Polarization of Moonlight
9-4 Deductions from the Observed Temperature Changes
9-5 The Effect of the Absence of an Atmosphere
9-6 Changes in the Moon's Surface: Apparent and Real
9-7 Are Tektites Samples from the Moon
Part II
10 Ray Systems
10-1 General Description
10-2 Special Aspects of some Ray Systems
10-3 Ray Dynamics applied to the Systems of Tycho and Copernicus
10-4 Relative and Absolute Times of Formation
10-5 On the Discrete Nature of the Rays
10-6 Dark Bands
11 The Grid System, and Lattice Patterns
11-1 Linear Features
11-2 The System Radial to Mare Imbrium
11-3 Intersecting Grids
11-4 Lattice Patterns and Their Time of Origin
11-5 Summary
12 Rilles, Faults, and Wrinkle Ridges
12-1 Description and Distribution of Rules
12-2 The Detailed Forms of Rules
12-3 The Associations of Rules with Faults and Ridges
12-4 On the Origin of Rules
12-5 Wrinkle Ridges
13 Crater Distribution and Frequency
13-1 The Spatial Distribution of Maria
13-2 The Frequency of Occurrence of Craters of Different Sizes
13-3 Anomalies in the Frequency Distribution of Craters
13-4 The Spatial Distribution of Craters
13-5 Crater-Pairs
13-6 Crater-Chains
13-7 The Other Side of the Moon
14 Conditions Relating to the Origin of the Moon's Surface Structure
14-1 Erosion and the Time Sequence of the Topographical Features
14-2 Origins of the Craters
14-3 The Nature of Maria
14-4 Summary of the Probable Time Sequence of the Craters
14-5 Domes and Plateau Craters
14-6 The Nature of the Forces which Produced the Grid System
Appendices
I Sources
II List of Constants
Index