While the ancient writers were familiar with the pearl itself, they knew little of the fisheries, and related many curious stories which had come to Athens and Rome. Pliny and Ælianus quoted from Megasthenes that the pearl-oysters lived in communities like swarms of bees, and were governed by one remarkable for its size and great age, and which was wonderfully expert in keeping its subjects out of danger, and that the fishermen endeavored first to catch this one, so that the others might easily be secured. Procopius, one of the most entertaining of the old Byzantine chroniclers, wrote of social relations between the pearl-oysters and the sharks, and of methods of inducing the growth of pearls. The principal fisheries of antiquity were in the Persian Gulf, on the coasts of Ceylon and India, and in the Red Sea. The pearls referred to in ancient Chinese literature appear to have been taken from the rivers and ponds of that country, while those in Cochin China and Japan seem to have come from the adjoining seas. The pearls were distributed among the nations in control of the fisheries, and from them, other people received collections, either as presents, in conquest, or by way of trade. History makes no mention of pearls having been obtained elsewhere than in the Orient up to the time of Julius Cæsar, when small quantities of inexpensive ones were collected in Britain by the invading Romans. And in the first century A.D., Pliny states that small reddish pearls were found about Italy and in the Bosphorus Straits near Constantinople. A number of specimens of pearls of the artistic Greeks and of the luxurious Romans are yet in existence, and some of these are in a fairly good state of preservation. A notable and interesting example is a superb Greek necklace of pearls and gold, referred to the third century B.C., and now in the Metropolitan Museum of Art in New York. Several earrings now in that museum, in the Hermitage at St. Petersburg, the British Museum, the Louvre in Paris, and in the Boston Museum of Fine Arts, are shown in this book. Some of these may have decorated ears that listened to the comedies of Aristophanes, the tragedies of Euripides, the philosophies of Plato, or the oratory of Demosthenes. A number of classic statues have the ears pierced for earrings, notably the Venus de Medici now in the Tribuna of the Uffizi, Florence; and a magnificent pair of half-pearls is said to have decorated the Venus of the Pantheon in Rome.[21] Pearl grape earrings are shown on the artistic intaglio by Aspasios, representing the bust of the Athene Parthenos of Phidias, which has been in the Gemmen Münzen Cabinet at Vienna since 1669.