Observations Concerning the Planet Venus

Chapter 1 Translator’s Preface

Chapter 2 Dedication

Chapter 3 Permission to Print is Granted

Chapter 4 New Phenomena of Hesperus and Phosphorus

Chapter 5 A Description of the Markings Observed on the Planet Venus (or my First Discovery) Which we Call Celidography

Chapter 7 The Celidography, or Description of the Markings Observed on Venus’ Globe, Is Presented and Names are Allotted to their Most Important Parts

Chapter 8 Concerning the Planet’s Rotation Round its Own Axis, or Perieilesis (Περιειλησις) in a Period of Twenty-four Days and Eight Hours

Chapter 9 Concerning the Parallelism of the Axis of Rotation Which Venus Always Maintains in its Orbit Round the Sun

Chapter 10 Concerning our Very Careful Observations of the Parallax of Venus and the Conclusions Drawn From Them

Chapter 11 Concerning a More Opportune Occasion, and Means to be Adopted, to Repeat the Observations of the Markings Described on the Planet Venus and to Ascertain the Spinning Movement Round its Own Axis, and the Parallelism of this Axis