Dionysius, younger of Syracuse, visited by Plato, [4]; corresponded with Plato, [7].
Dionysodorus, the Sophist, [383].
Dioteles, friend of Aristotle, [17].
Διότι, Τό, the Why, knowledge of, [223], one of the four heads of Investigation, [238]; in search for a middle term, [239]; relation of, to the question Quid, [239]; see [Cause].
Disjunction, Fallacy of, [385]; how to solve, [408].
Division Logical, weakness of, [163], [242]; use of, to obtain a definition, [250].
E.
Ear, structure of the, [468].
Earth, opinions as to positions of, [648]; opinions as to its state of motion or rest, figure, &c., [649] seq.; at rest in the centre of the Kosmos, [652]; necessarily spherical, [652]. [653]; size of, [653].
Eclipse, lunar, illustration of Causation from, [254], [611].