CHRONOLOGY.

(Approximate where precise dates are not known.)

B.C.

624–547

Thales.

610–546

Anaximander.

585–526

Anaximenes.

572–497

Pythagoras.

born 516 or 514
(possibly 540).

Parmenides.

500–428

Anaxagoras.

494–434

Empedocles.

5th century

{ Œnopides of Chios.

{ Philolaus.

427–347

Plato.

408–355

Eudoxus.

388–315

Heraclides of Pontus.

384–322

Aristotle.

370–300

Callippus.

310–230

Aristarchus of Samos.

287–212

Archimedes.

284–203

Eratosthenes.

265–190

Apollonius of Perga.

3rd century

Aratus.

fl. 150

Hipparchus.

135–51

Posidonius.

A.D.

50–125

Plutarch.

100–178

Ptolemy.

ABERDEEN: THE UNIVERSITY PRESS