384 INDEX. Red Sea, mistakes about its width, 102; stations established on by the Ptolemies, 146 Retreat of the Ten Thousand, in foil. Rha, river (Volga), first mentioned by Ptolemy, 351 Rhapta, 353 Rhegium, 51; meaning of the name, 197 Rhinoceroses, in the Soudan, 353 Rhodaune, river, 34 Richards, Mr G, C., on Pausanias' veracity, 363 Rio do Ouro, 104 Rivers, disappearance of in Greece, 10; their character, as described by Aristotle and others, 195—7 Roads, the Roman, their importance to geography, 235; description of them, 209 foil.; (see Royal Road) Roman Empire, its natural limits, 293; its frontier defences, 293 foil. Roman geographers, few and inferior, 13, 261; Strabo's and Pliny's opin- ions of them, 13 Rome, first mentioned in the ' Peri- plus' of Scylax, 120; Strabo's de- scription of, 254 Royal Road, in India, 150; in Persia, 90; its course through Asia Minor, 90; through Cilicia, Armenia, Ma- tiene, and Cissia, 91 Sagres, Mt* 108 Sahara, the, 97, 291; crossed by Julius* Maternus, 353 St. Michael's Mount, 156 Sallust, on the common source of the Euphrates and Tigris, 272; his de- scription of a mountain climb, 325 Samarcand, 135 Samos, meaning of the name, 5 Samosata, 298 Sargasso Sea, in, 112 Saspires, 83 Satala, 298 Sataspes, voyage of, probably au- thentic, 103 Satibarzanes, satrap of Aria, 133 Sauromatae, 86 Scandinavia, regarded as an island, 289 Sciapodes, 74 Scilly Islands, 37 Scotland, erroneous position of on Ptolemy's map, 347 Scylax of Caryamla, 74; his voyage, 80, 101; improbability of it, ror; the so-called 'Pcriplus' of, 118 Scylla and Charyhclis, an embodi-' ment of the dangers of the Straits of Messina, 28 Scythia, Herodotus' knowledge of, 84, 85; position of tribes in, 85 Seistan, Lake, 130, 133 Sclcucus Nicator, his empire in the East, 148; cedes the Indus valley to Chandragupta, 148 Sclinus, 54 Sembritae, 93, 147, 173 Seneca, on Nero's expedition to the Nile, 292; on Etna, 319 Senegal River, 106 Septimius Flaccus, his expedition into Aethiopia, 353 Sera, city of, in China, 342, 352 Scrica, origin of the name, 281 Shape of the earth, primitive views concerning the, 50, 60; arguments in favour of its sphericity, 167, 168 Sherboro Sound, 108 Sicels, the, akin to the Greeks, 53 Sidon, meaning of the name, 4; mentioned in Homer, 25 Signalling, development of the art of» 333—5 Silk, brought from China, 281 Sinope, an early trading-station, 47; colonised by the Milesians, 47; described by Polybius, 212; its position compared to that of Car- thage, 47 Sirdar Pass, 131 Sir Daria, river, 135 Siris, name of a portion of the Nile, 283 " Sleeping-place of the Sun," 159 Sobat, river, 292 Socotra, 270 Sogjdiana, 135 Solimis, his 'Memorabilia,' 364; its influence in the middle ages, 365; modern estimate of, 365 Soloeis, prom., 94, 103, 105 Somaliland, 147 Soudan, the, expeditions to, men- tioned by Ptolemy, 352, 353 Southern Horn, in Africa, 108 Southern Ocean, belief in the con- tinuity of the, 80 Spain, Roman conquest of, 226 foil.; Strabo's description of, 252; chief Roman road in, 300