After a short stay in Thrace, during which he was convinced that the Getæ were the bravest portion of this race, Herodotus arrived in Greece, which was to be the termination of his travels, to the country where he hoped to collect the only documents still wanting to complete his history, and he visited all the spots that had become illustrious by the great battles fought between the Greeks and Persians. He gives a minute description of the Pass of Thermopylæ, and of his visit to the plain of Marathon, the battlefield of Platæa, and his return to Asia Minor, whence he passed along the coast on which the Greeks had established several colonies. Herodotus can only have been twenty-eight years of age when he returned to Halicarnassus in Caria, for it was in B.C. 456 that he read the history of his travels at the Olympic Games. His country was at that time oppressed by Lygdamis, and he was exiled to Samos; but though he soon after rose in arms to overthrow the tyrant, the ingratitude of his fellow-citizens obliged him to return into exile. In 444 he took part in the games at the Pantheon, and there he read his completed work, which was received with enthusiasm, and towards the end of his life he retired to Thurium in Italy, where he died, B.C. 406, leaving behind him the reputation of being the greatest traveller and the most celebrated historian of antiquity.

After Herodotus we must pass over a century and a half, and only note, in passing, the Physician Ctesias, a contemporary of Xenophon, who published the account of a voyage to India that he really never made; and we shall come in chronological order to Pytheas, who was at once a traveller, geographer, and historian, one of the most celebrated men of his time. It was about the year B.C. 340 that Pytheas set out from the columns of Hercules with a single vessel, but instead of taking a southerly course like his Carthaginian predecessors, he went northwards, passing by the coasts of Iberia and Gaul to the furthest points which now form the Cape of Finisterre, and then he entered the English Channel and came upon the English coast—the British Isles—of which he was to be the first explorer. He disembarked at various points on the coast and made friends with the simple, honest, sober, industrious inhabitants, who traded largely in tin.

Pytheas ventured still further north, and went beyond the Orcades Islands to the furthest point of Scotland, and he must have reached a very high latitude, for during the summer the night only lasted two hours. After six days further sailing, he came to lands which he calls Thule, probably the Jutland or Norway of the present day, beyond which he could not pass, for he says, "there was neither land, sea, nor air there." He retraced his course, and changing it slightly, he came to the mouth of the Rhine, to the country of the Ostians, and, further inland, to Germany. Thence he visited the mouth of the Tanais, that is supposed to be the Elbe or the Oder, and he retuned to Marseilles, just a year after leaving his native town. Pytheas, besides being such a brave sailor, was a remarkably scientific man: he was the first to discover the influence that the moon exercises on the tides, and to notice that the polar star is not situated at the exact spot at which the axis of the globe is supposed to be. Some years after the time of Pytheas, about B.C. 326 a Greek traveller made his name famous. This was Nearchus, a native of Crete, one of Alexander's admirals, and he was charged to visit all the coast of Asia from the mouth of the Indus to that of the Euphrates. When Alexander first resolved that this expedition should take place, which had for its object the opening up of a communication between India and Egypt, he was at the upper part of the Indus. He furnished Nearchus with a fleet of thirty-three galleys, of some vessels with two decks, and a great number of transport ships, and 2000 men. Nearchus came down the Indus in about four months, escorted on either bank of the river by Alexander's armies, and after spending seven months in exploring the Delta, he set sail and followed the west line of what we call Beloochistan in the present day.

He put to sea on the second of October, a month before the winter storms had taken a direction that was favourable to his purpose, so that the commencement of his voyage was disastrous, and in forty days he had scarcely made eighty miles in a westerly direction. He touched first at Stura and at Corestis, which do not seem to answer to any of the now-existing villages on the coast; then at the Island of Crocala, which forms the bay of Caranthia. Beaten back by contrary winds, after doubling the cape of Monze, the fleet took refuge in a natural harbour that its commander thought that he could fortify as a defence against the attacks of the barbarous natives, who, even at the present day, keep up their character as pirates.

After spending twenty-four days in this harbour, Nearchus put to sea again on the 3rd of November. Severe gales often obliged him to keep very near the coast, and when this was the case he was obliged to take all possible precautions to defend himself from the attacks of the ferocious Beloochees, who are described by eastern historians "as a barbarous nation, with long dishevelled hair, and long flowing beards, who are more like bears or satyrs than human beings." Up to this time, however, no serious disaster had happened to the fleet, but on the 10th of November in a heavy gale two galleys and a ship sank. Nearchus then anchored at Crocala, and there he was met by a ship laden with corn that Alexander had sent out to him, and he was able to supply each vessel with provisions for ten days.

After many disasters and a skirmish with some of the natives, Nearchus reached the extreme point of the land of the Orites, which is marked in modern geography by Cape Morant. Here, he states in his narrative that the rays of the sun at mid-day are vertical, and therefore there are no shadows of any kind; but this is surely a mistake, for at this time in the Southern hemisphere the sun is in the Tropic of Capricorn; and, beyond this, his vessels were always some degrees distant from the Tropic of Cancer, therefore even in the height of summer this phenomenon could not have taken place, and we know that his voyage was in winter.

Circumstances seemed now rather more in his favour; for the time of the eastern monsoon was over, when he sailed along the coast which is inhabited by a tribe called Ichthyophagi, who subsist solely on fish, and from the failure of all vegetation are obliged to feed even their sheep upon the same food. The fleet was now becoming very short of provisions; so after doubling Cape Posmi Nearchus took a pilot from those shores on board his own vessel, and with the wind in their favour they made rapid progress, finding the country less bare as they advanced, a few scattered trees and shrubs being visible from the shore. They reached a little town, of the name of which we have no record, and as they were almost without food Nearchus surprised and took possession of it, the inhabitants making but little resistance. Canasida, or Churbar as we call it, was their next resting-place, and at the present day the ruins of a town are still visible in the bay. But their corn was now entirely exhausted, and though they tried successively at Canate, Trois, and Dagasira for further supplies, it was all in vain, these miserable little towns not being able to furnish more than enough for their own consumption. The fleet had neither corn nor meat, and they could not make up their minds to feed upon the tortoises that abound in that part of the coast.

Just as they entered the Persian Gulf they encountered an immense number of whales, and the sailors were so terrified by their size and number, that they wished to fly; it was not without much difficulty that Nearchus at last prevailed upon them to advance boldly, and they soon scattered their formidable enemies.

Nearchus leading on his followers against the monsters of the deep.

Having changed their westerly course for a north-easterly one, they soon came upon fertile shores, and their eyes were refreshed by the sight of corn-fields and pasture-lands, interspersed with all kinds of fruit-trees except the olive. They put into Badis or Jask, and after leaving it and passing Maceta or Mussendon, they came in sight of the Persian Gulf, to which Nearchus, following the geography of the Arabs, gave the misnomer of the Red Sea.