=The Historical Facts Underlying the Plague Stories.= Moses' work in leading the Hebrews from Egypt is a familiar chapter in biblical history. In the break-down of the Egyptian government and in the period of anarchy which followed the fall of the Nineteenth Dynasty, a supremely favorable opportunity was offered for the escape of the serfs. An Egyptian writer states that at this time "the Egyptians had no chief ruler for many years. The land of Egypt was in the hands of the nobles and rulers of towns; each slew his neighbor, great and small." A certain Syrian also proclaimed himself king and made the entire land tributary to him, plundering the people. To these evils were added the horrors of foreign invasion. Even under a good government the sanitary conditions in Egypt are far from satisfactory. In the time of anarchy and bloodshed the hot valley of the Nile is ravaged by disease and plagues. The seven plagues described in the oldest biblical narrative were not miracles, but the natural catastrophes which, from time to time, have afflicted the land of Egypt. Most of them are characteristic of the Nile Valley and can only be fully understood in the light of its physical and climatic peculiarities. Certain of these plagues also stand in a close casual relation to each other, as well as to the historical events recorded by the contemporary Egyptian historians. Foreign invasion and civil war, with the attendant slaughter, would inevitably lead to the contamination of the waters of the Nile. Upon this one river depended the health and life of the inhabitants of Egypt. Unsanitary conditions and the defilement of the waters would breed frogs and flies. The flies would in turn spread abroad the germs of the disease which attacked the flocks. Hail and swarms of locusts are exceedingly rare in Egypt, but they are not unknown, as careful observers have attested, and their rarity would make their appearance all the more impressive. The identification of these remarkable plagues with the anger of the god or gods was accepted by the Egyptian as well as by the biblical writers.