Public domain. Cover image from Project Gutenberg ebook #68690.
The Vailan or annular theory: A synopsis of Prof. I. N. Vail's argument in support of the claim that this Earth once possessed a Saturn-like system of rings
Capitula (4)
- THE VAILAN OR ANNULAR THEORY. PREFACE. 0:00
- THE VAILAN OR ANNULAR SYSTEM. 2:33
- APPENDIX. 53:02
- LETTER FROM PROF. I. N. VAIL. 55:23
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