CONTENTS 
viii 
TABLES 
(This list includes only the Tables most likely to be used for reference ) 
TABLE PAGE 
4, 5, 6. Solutions for Polytropes n — 2, 2\, 3 .... 82-83 
7. Solution for Isothermal Gas Sphere ..... 90 
8. Weights for Calculating Opacity with Rosseland’s Correction 112 
13 a. Central Temperature and Mean Density for given Mass and 
Effective Temperature . . . . . . .136 
14. Calculation of Absolute Magnitude from Mass . . . 137 
16. Reduction of Bolometric to Visual Magnitude. Surface 
Brightness ......... 139 
16 a. Temperature Scale for Spectral Types .... 141 
17, 18, 19, 20. Comparison of Observations with the Theoretical 
Mass-Luminosity Law ...... 154-155 
23. Data for Stars on the Main Series (Central Temperature 
40,000,000°) 178 
24, 25. Observational and Theoretical Data for 18 Cepheids . . 182 
30. Atomic Numbers and Energy-Levels of the Elements . . 252 
36. Distribution Density of Free Electrons .... 263 
38. Electrostatic Correction to the Pressure .... 269 
39. Values of Ratio of Specific Heats for Stellar Material . . 270 
41. Radiation of Mass. Duration of Stages of Evolution . . 309 
47. Stellar Abundance of the Elements 370