Nineveh, the capital of Assyria, disappeared suddenly. In Alexander's day its site was unknown. Babylon, however, was not destroyed by Cyrus, but continued its importance until the rise of its rival Seleucia, and was still inhabited in the Middle Ages. But the two nations were forgotten in the west for hundreds of years. Then with the dawn of peace and order in Europe during the later Middle Ages, came the desire to know about the past. Monks who made pilgrimages to the Holy Land, during the twelfth and thirteenth centuries, sometimes pressed farther east, and made mention of strange mounds seen in the valleys of these ancient rivers. Travelers told of curious inscriptions found among the ruins there. In rare cases, they even went to the length of copying one or two, with greater or less accuracy. It was left finally for the eighteenth century to locate the old sites of Babylonian cities, and for the nineteenth century to discover the hidden meaning of the wedge-shaped letters inscribed upon their ruins. To the patient efforts of the men who persisted in their difficult and often disheartening task of unearthing ruins, and to the scholars who toiled year after year to read the forgotten language these ruins brought to light, we owe most that is now known regarding the early inhabitants of the Euphrates valley. These nations, so long destroyed, their cities, so long abandoned, we shall try to bring before us as they have been reconstructed by historians in more pretentious volumes. Naturally, any account of the Babylonians and Assyrians will involve some consideration of their neighbors, whose civilizations developed by their side, and whose fortunes frequently mingled with theirs. THE RECOVERY OF FORGOTTEN CITIES. Were we to proceed at once to the development of the Babylonian and Assyrian states without first pausing to note what far-reaching efforts have been made to read their early civilization from their remains, entombed within the earth, we would deprive ourselves of one of the most interesting pages in modern historical research. Since the middle of the twelfth century we find references made to the ruins of Babylon and Nineveh, by monks and travellers who greatly confused the ancient cities, repeatedly mistaking Baghdad for Babylon. In 1613 there was published by an English nobleman an account of his distant travels. "Sir Anthony Sherley; His Relation of His Travels into Persia." This is what he wrote of these ancient capitals: "I will speak ... of Babylon; not to the intent to tell stories, either of the huge ruins of the first Towne or the splendour of the second, but because nothing doth impose anything in man's nature more than example--to shew the truth of God's word, whose vengeances, threatened by His Prophets, are truely succeeded in all those parts....