Geographiae informatio

The Pontus is 3350 stades, the narrows at the Thracian Bosporus, where Dareius built the bridge against the Scythians, is six stades.

The Persian Sea, being round and narrowing to the mouth at the capes of Carmania and Arabia, has a perimeter of 20000 stades; the mouth, between Arabia and Carmania is 400 stades.

The Hyrcanian or Caspian Sea, being crescent-shaped, but some say oblong, is 20000 stades and has a passage of 1000 stades at the mouth.

The Arabian Gulf, being narrow and oblong, begins from the gulf of Heroöpolis along Troglodytica to Ptolemais at the Hunts 9000 stades long, where follows a voyage of 6500 stades, the narrows at Deire of 60 stades, along the Red Sea to the ocean 5000 stades, the rest is not navigated. The side along Arabia from the gulf of Aelana is 14000 stades. Arabia itself extends to the Red Sea and lengthens to 12000 stades.

The length of the earth from the Ganges to Gades is 68545 stades, thus: from the Ganges River to Myriandrus in the gulf of Issus 41725 stades, thus: from the Ganges to the outlet of the Indus River 16000 stades, from the Indus to the Caspian Gates 15300 stades, to the Euphrates 10050 stades, to Myriandrus 375 stades.