Take, for a moment, the bird to which we have just alluded. The hawk, like the vulture, plays an important part in Egyptian art. The vulture symbolizes Maut, the spouse of Amen. It furnishes the sign by which her name is written, and sometimes, as the symbol of maternity, its head appears over the brow of the goddess, its wings forming her head-dress. The goddess Nekheb, who symbolizes the region of the South, is also represented by a vulture.[79] So it is with the ibis. It supplies the character by which the name Thoth is written, and that god is figured with the head of an Ibis. The part played by these birds in the representation of the gods, both in the plastic arts and in writing, is to be explained by the sentiments of gratitude and religious veneration of which they were the objects, sentiments which were the natural outcome of the practical services which they rendered to mankind. [79] PIERRET, _Dictionnaire d'Archéologie Égyptienne_. [Illustration: FIG. 43.--Rannu (from Wilkinson).] When the early fathers of the nation first established themselves upon the banks of the Nile, they found invaluable allies in those energetic birds of prey, and the alliance has been continued to their latest descendants. After the annual inundation the damp earth was overrun by toads and frogs, by snakes and lizards and all kinds of creeping things. Fishes, left by the retreating flood in pools which were soon dried up by the blazing sun, perished, and, decomposing, rendered the air noisome and malarious. In addition to this there were the corpses of wild and domestic animals, and the offal of every kind which accumulated round the dwellings of the peasantry and rapidly became putrid under the sun of Egypt. If left to decompose they would soon have bred a pestilence, and in those days human effort was not to be reckoned upon in the work of sanitation. To birds of prey, then, was assigned the indispensable work of elimination and transformation, an office which they yet fill satisfactorily in the towns and villages of Africa. Thanks to their appetite and to the powerful wings which carried them in a twinkling to wherever their presence was required, the multiplication of the inferior animals was kept within due limits, and decomposing matter was recalled into the service of organic life. Had these unpaid scavengers but struck work for a day, the plague, as Michelet puts it, would soon have become the only inhabitant of the country.[80]