For upwards of sixteen hundred years these cities remained buried. But about the middle of the last century, curiosity with respect to them was stirred, inquiry commenced, and excavations were attempted. As in the more recent case of Nineveh, but with still more satisfactory results, success at once crowned investigation. The material that had destroyed Herculaneum and Pompeii had also preserved them. That which had robbed them of life had also perpetuated their story in death. The cities were redelivered to man so far undecayed, that he obtained actual visible knowledge of the manner of life of one of the most remarkable people that ever governed the world. To the insight thus obtained, the visitor is indebted for the reproduction of the Pompeian house before which he now stands--a habitation of the time, complete in every respect. It is not asserted that the visitor beholds the actual ground-plan of any one specific house, but he sees the type of a Pompeian villa, made up of many fragments that have been found. The paintings and decorations are copies of originals found in the destroyed cities. The doorway of this house stands fronting the Nave. Entering it, we pass through the narrow prothyrum or passage, on either side of which is a room devoted to the door-keeper and slaves, and on its pavement the representation in mosaic of a savage dog, and the words “_cave canem_”--beware of the dog--meet the eye. It is the usual notice found on the threshold of these Roman houses. Emerging from the passage, we are at once in the “_atrium_,” or outer court of the edifice. The eye is not attracted here, as in other restorations of the palace, by the architectural design alone; the attention is also secured and charmed by the decorations. The bright coloured walls, the light fanciful character of the ornaments, the variety of patterns, and the excellent method of colouring,--which at the lower part is dark, and graduates upwards, until it becomes white on the ceiling,--constitute some of the beautiful features that give individuality to Pompeian houses, and cause them to differ most essentially from every other style. [Illustration: Ground Plan of Pompeian Court.]