But it was not alone the exchange of material products that was comprehended in Ptolemy's scheme. His aim was to make his capital the intellectual centre of the world--the place where the arts, sciences, literatures, and even the religions, of the world should meet and mingle. He founded the famous Museum, a sort of college, which became the "University of the East," and established the renowned Alexandrian Library. Poets, artists, philosophers, and teachers in all departments of learning were encouraged to settle in Alexandria by the conferring of immunities and privileges, and by gifts and munificent patronage. His court embraced the learning and genius of the age. Ptolemy II., Philadelphus (283-247 B.C.), followed closely in the footsteps of his father, carrying out, as far as possible, the plans and policies of the preceding reign. Under his successor, Ptolemy III., Euergetes (247-242 B.C.), the dominions of the Ptolemies touched their widest limits; while the capital Alexandria reached the culminating point in her fame as the centre of Hellenistic civilization. Altogether the Ptolemies reigned in Egypt almost exactly three centuries (323-30 B.C.). Those rulers who held the throne for the last two hundred years were, with few exceptions, a succession of monsters, such as even Rome in her worst days could scarcely equal. The usage of intermarriage among the members of the royal family,--a usage in which the Ptolemies followed what was a custom of the ancient Pharaohs,--led to endless family quarrels, which resulted in fratricide, matricide, and all the dark deeds included in the calendar of royal crime. The story of the renowned Cleopatra, the last of the house of the Ptolemies, will be told in connection with Roman history, to which it properly belongs. MACEDONIA AND GREECE.--From the time of the subjection of Greece by Philip and Alexander to the absorption of Macedonia into the growing dominions of Rome, the Greek cities of the peninsula were very much under the control or influence of the Macedonian kings. But the Greeks were never made for royal subjects, and consequently they were in a state of chronic revolt against this foreign authority. Thus, no sooner had they heard of the death of Alexander than several of the Grecian states rose against the Macedonian general Antipater, and carried on with him what is known as the Lamian War (323-321 B.C.). The struggle ended disastrously for the Greeks, and Demosthenes, who had been the soul of the movement, was forced to flee from Athens. He took refuge upon an island just off the coast of the Peloponnesus; but being still hunted by Antipater, he put an end to his own life by means of poison. [Illustration: THE DYING GAUL.]