He went first to Egypt. Egypt had been until that time, closely shut up from the rest of mankind by the jealousy and watchfulness of the government. But now, on account of some recent political changes, which will be hereafter more particularly alluded to, the way was opened for travelers from other countries to come in. Herodotus was the first to avail himself of this opportunity. He spent some time in the country, and made himself minutely acquainted with its history, its antiquities, its political and social condition at the time of his visit, and with all the other points in respect to which he supposed that his countrymen would wish to be informed. He took copious notes of all that he saw. From Egypt he went westward into Libya, and thence he traveled slowly along the whole southern shore of the Mediterranean Sea as far as to the Straits of Gibraltar, noting, with great care, every thing which presented itself to his own personal observation, and availing himself of every possible source of information in respect to all other points of importance for the object which he had in view. The Straits of Gibraltar were the ends of the earth toward the westward in those ancient days, and our traveler accordingly, after reaching them, returned again to the eastward. He visited Tyre, and the cities of Phoenicia, on the eastern coast of the Mediterranean Sea, and thence went still farther eastward to Assyria and Babylon. It was here that he obtained the materials for what he has written in respect to the Medes and Persians, and to the history of Cyrus. After spending some time in these countries, he went on by land still further to the eastward, into the heart of Asia. The country of Scythia was considered as at "the end of the earth" in this direction. Herodotus penetrated for some distance into the almost trackless wilds of this remote land, until he found that he had gone as far from the great center of light and power on the shores of the AEgean Sea as he could expect the curiosity of his countrymen to follow him. He passed thence round toward the north, and came down through the countries north of the Danube into Greece, by way of the Epirus and Macedon. To make such a journey as this was, in fact, in those days, almost to explore the whole known world.