The Romans in most cases collected the revenues of a province by means of a publican or farmer, to whom the taxes were let by auction; but such was the importance of Egypt that the same jealousy which made them think its government too great to be trusted to a man of high rank, made them think its revenues too large to be trusted to one farmer. The smaller branches of the Egyptian revenue were, however, let out as usual, and even the collection of the customs of the whole of the Red Sea was not thought too much to trust to one citizen. Annius Plocamus, who farmed them in this reign, had a little fleet under his command to collect them with; and, tempted either by trade or plunder, his ships were sometimes as far out as the south coast of Arabia. On one occasion one of his freedmen in the command of a vessel was carried by a north wind into the open ocean, and after being fifteen days at sea found himself on the coast of Ceylon. This island was not then wholly new to the geographers of Egypt and Europe. It had been heard of by the pilots in the voyage of Alexander the Great; Eratosthenes had given it a place in his map; and it had often been reached from Africa by the sailors of the Red Sea in wickerwork boats made of papyrus; but this was the first time it had been visited by a European.
In the neighbourhood of the above-mentioned road from Koptos to Berenicê were the porphyritic quarries and the emerald mines, which were briskly worked under the Emperor Claudius. The mountain was now named the Claudian Mountain.
As this route for trade became known, the geographers began to understand the wide space that separates India from Africa. Hitherto, notwithstanding a few voyages of discovery, it had been the common opinion that Persia was in the neighbourhood of Ethiopia. The Greeks had thought that the Nile rose in India, in opposition to the Jews, who said that it was the river Gibon of the garden of Eden, which made a circuit round the whole of the land of Cush, or Ethiopia. The names of these countries got misused accordingly; and even after the mistake was cleared up we sometimes find Ethiopia called India.
The Egyptian chemists were able to produce very bright dyes by methods then unknown to Greece or Rome. They dipped the cloth first into a liquid of one colour, called a mordant, to prepare it, and then into a liquid of a second colour; and it came out dyed of a third colour, unlike either of the former. The ink with which they wrote the name of a deceased person on the mummy-cloth, like our own marking-ink, was made with nitrate of silver. Their knowledge of chemistry was far greater than that of their neighbours, and the science is even now named from the country of its birth. The later Arabs called it Alchemia, the Egyptian art, and hence our words alchemy and chemistry. So also Naphtha, or rock oil, from the coast of the Red Sea; and Anthracite, or rock fuel, from the coast of Syria, both bear Egyptian names. To some Egyptian stones the Romans gave their own names; as the black glassy obsidian from Nubia they called after Obsidius, who found it; the black Tiberian marble with white spots, and the Augustan marble with regular wavy veins, were both named after the emperors. Porphyry was now used for statues for the first time, and sometimes to make a kind of patchwork figure, in which the clothed parts were of the coloured stone, while the head, hands, and feet were of white marble. And it was thought that diamonds were nowhere to be found but in the Ethiopian gold mines.
Several kinds of wine were made in Egypt; some in the Arsinoïte nome on the banks of the lake Mceris; and a poor Libyan wine at Antiplme on the coast, a hundred miles from Alexandria. Wine had also been made in Upper Egypt in small quantities a very long time, as we learn from the monuments; but it was produced with difficulty and cost and was not good; it was not valued by the Greeks. It was poor and thin, and drunk only by those who were feverish and afraid of anything stronger. That of Anthylla, to the east of Alexandria, was very much better. But better still were the thick luscious Tæniotic and the mild delicate Mareotic wines. This last was first grown at Plinthine, but afterwards on all the banks of the lake Mareotis. The Mareotic wine was white and sweet and thin, and very little heating or intoxicating. Horace had carelessly said of Cleopatra that she was drunk with Mareotic wine; but Lucan, who better knew its quality, says that the headstrong lady drank wine far stronger than the Mareotic. Near Sebennytus three kinds of wine were made; one bitter named Peuce, a second sparkling named Æthalon, and the third Thasian, from a vine imported from Thasus. But none of these Egyptian wines was thought equal to those of Greece and Italy. Nor were they made in quantities large enough or cheap enough for the poor; and here, as in other countries, the common people for their intoxicating drink used beer or spirits made from barley.
The Egyptian sour wine, however, made very good vinegar, and it was then exported for sale in Rome. During this half-century that great national work, the lake of Moeris, by which thousands of acres had been flooded and made fertile, and the watering of the lower country regulated, was, through the neglect of the embankments, at once destroyed. The latest traveller who mentions it is Strabo, and the latest geographer Pomponius Mela. By its means the province of Arsinoë was made one of the most fruitful and beautiful spots in Egypt. Here only does the olive grow wild. Here the vine will grow. And by the help of this embanked lake the province was made yet more fruitful. But before Pliny wrote, the bank had given way, the pentup waters had made for themselves a channel into the lake now called Birket el Kurun, and the two small pyramids, which had hitherto been surrounded by water, then stood on dry ground. Thus was the country slowly going to ruin by the faults of the government, and ignorance in the foreign rulers. But, on the other hand, the beautiful temple of Latopolis, which had been begun under the Ptolemies, was finished in this reign; and bears the name of Claudius with those of some later emperors on its portico and walls.