I. The Form of the Earth.
Primitive conception of the earth as flat
In Chaldea and Egypt
In Persia
Among the Hebrews
Evolution, among the Greeks, of the idea of its sphericity
Opposition of the early Church
Evolution of a sacred theory, drawn from the Bible
Its completion by Cosmas Indicopleustes
Its influence on Christian thought
Survival of the idea of the earth's sphericity--its acceptance by
Isidore and Bede
Its struggle and final victory

II. The Delineation of the Earth.
Belief of every ancient people that its own central place was the
centre of the earth
Hebrew conviction that the earth's centre was at Jerusalem
Acceptance of this view by Christianity
Influence of other Hebrew conceptions--Gog and Magog, the "four
winds," the waters "on an heap"

III. The Inhabitants of the Earth.
The idea of antipodes
Its opposition by the Christian Church--Gregory Nazianzen,
Lactantius, Basil, Ambrose, Augustine, Procopius of Gaza, Cosmas,
Isidore
Virgil of Salzburg's assertion of it in the eighth century
Its revival by William of Conches and Albert the Great in the
thirteenth