CONTENTS OF THE FIRST VOLUME. xxvii 



PAOK 



Sect. 2. Estimate of the Value of the Theory of Eccentrics 



and Epicycles . . . . . . 102 



Sect 3. Discovery of the Precession of the Equinoxes . 199 



CHAPTER IV. SEQUEL TO THE INDUCTIVE EPOCH OF 

 HIPPARCHUS. 



Sect. 1. Researches which verified the Theory . . 203 



Sect. 2. Researches which did not verify the Theory . 207 



Sect. 3. Methods of Observation of the Greek Astronomers 210 



Sect. 4. Period from Hipparchus to Ptolemy . .219 



Sect. 5. Measures of the Earth .... 224 



Sect. 6. Ptolemy's Discovery of Evection .... 22(5 



Sect. 7. Conclusion of the History of Greek Astronomy . 234 



Sect. 8. Arabian Astronomy 236 



BOOK IV. 



\ 



HISTORY OF PHYSICAL SCIENCE IN THE 

 MIDDLE AGES. 



Introduction . . . . . .' .251 



CHAPTER I. ON THE INDISTINCTNESS OF IDEAS OF THE 



MIDDLE AGES. . 251 



1 . Collections of Opinions ..... 255 



2. Indistinctness of Ideas in Mechanics . .257 



3. shewn in Architecture . . 263 



4. in Astronomy .... 264 



5. shewn by Skeptics . . 265 



6. Neglect of Physical Reasoning in Christendom . . 268 



7- Question of Antipodes .... 269 



8. Intellectual Condition of the Religious Orders . . 273 



9. Popular Opinions ....... 276 



CHAPTER II. THE COMMENTATORIAL SPIRIT OF THE 



MIDDLE AGES 280 



1. Natural Bias to Authority 282 



2. Character of Commentators ..... 284 



3. Greek Commentators of Aristotle .... 287 



