Chapter XIII
Reading edition
CHAPTER XIII
AETHER AND STARRY WORLD
ART.117.STARRY WORLD 306
"118.STARS AND KEPLER'S LAWS 309
"119.AETHER AND NEBULAE 313
"120.WHAT IS A NEBULA? 314
"121.AETHER AND NEBULAR HYPOTHESIS 317
"122.KINDS OF NEBULAE 319
Reading edition
ART.117.STARRY WORLD 306
"118.STARS AND KEPLER'S LAWS 309
"119.AETHER AND NEBULAE 313
"120.WHAT IS A NEBULA? 314
"121.AETHER AND NEBULAR HYPOTHESIS 317
"122.KINDS OF NEBULAE 319