The old Dorian settlers in Syracuse pleased themselves with the fable that their fountain, Arethusa, had been a Grecian nymph, who, like themselves, had crossed the sea to Sicily. The poetry of Theocritus, read or sung in sultry Alexandria, must have seemed like a new welling up of the waters of Arethusa in the sandy soil of Egypt. We cannot certainly say when the poet first came from Syracuse, or from Cos, to Alexandria. It is evident however from the allusions in the fifteenth and seventeenth idyls that he was living there after Ptolemy Philadelphus married his own sister, Arsinoë. It is not impossible to form some idea of the condition of Alexandrian society, art, religion, literature and learning at the court of Ptolemy Philadelphus. The vast city, founded some sixty years before, was now completed. The walls, many miles in circuit, protected a population of about eight hundred thousand souls. Into that changing crowd were gathered adventurers from all the known world. Merchantmen brought to Ptolemy the wares of India and the porcelains of China. Marauders from upper Egypt skulked about the native quarters, and sallied forth at night to rob the wayfarer. The king’s guards were recruited with soldiers from turbulent Greece, from Asia, from Italy. Settlers were attracted from Syracuse by the prospect of high wages and profitable labour. The Jewish quarters were full of Israelites who did not disdain Greek learning. The city in which this multitude found a home was beautifully constructed. The Mediterranean filled the northern haven, the southern walls were washed by the Mareotic lake. If the isle of Pharos shone dazzling white, and wearied the eyes, there was shade beneath the long marble colonnades, and in the groves and cool halls of the Museum and the Libraries. The Etesian winds blew fresh in summer from the north, across the sea, and refreshed the people in their gardens. No town seemed greater nor wealthier to the voyager, who (like the hero of the Greek novel _Clitophon and Leucippe_) entered by the gate of the Sun, and found that, after nightfall, the torches borne by men and women hastening to some religious feast, filled the dusk with a light like that of ‘the sun cut up into fragments.’ At the same time no town was more in need of the memories of the country, which came to her in well-watered gardens, in landscape-paintings, and in the verse of Theocritus.