CHAPTER I

.--ON THE INDISTINCTNESS OF IDEAS OF THE MIDDLE AGES.

1. Collections of Opinions. 187 2. Indistinctness of Ideas in Mechanics. 188 3. " " shown in Architecture. 191 4. " " in Astronomy. 192 5. " " shown by Skeptics. 192 6. Neglect of Physical Reasoning in Christendom. 195 7. Question of Antipodes. 195 8. Intellectual Condition of the Religious Orders. 197 9. Popular Opinions. 199

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