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structed throughout the country, which restricted the destructive tendencies of the Tigris and Euphrates and developed to a high degree their potentialities as fertilizing agencies. The greatest of these canals appear to have been anciently river beds. One, which is called Shatt en Nil to the north, and Shatt el Kar to the south, curved eastward from Babylon, and sweeping past Nippur, flowed like the letter S towards Larsa and then rejoined the river. It is believed to mark the course followed in the early Sumerian period by the Euphrates river, which has moved steadily westward many miles beyond the sites of ancient cities that were erected on its banks. Another important canal, the Shatt el Hai, crossed the plain from the Tigris to its sister river, which lies lower at this point, and does not run so fast. Where the artificial canals were constructed on higher levels than the streams which fed them, the water was raised by contrivances known as "shaddufs"; the buckets or skin bags were roped to a weighted beam, with the aid of which they were swung up by workmen and emptied into the canals. It is possible that this toilsome mode of irrigation was substituted in favourable parts
by the primitive water wheels which are used in our own day by the inhabitants of the country who cultivate strips of land along the river banks.
In Babylonia there are two seasons--the rainy and the dry. Rain falls from November till March, and the plain is carpeted in spring by patches of vivid green verdure and brilliant wild flowers. Then the period of drought ensues; the sun rapidly burns up all vegetation, and everywhere the eye is wearied by long stretches of brown and yellow desert. Occasional sandstorms darken the heavens, sweeping over sterile wastes and piling up the shapeless mounds which mark the sites of ancient cities. Meanwhile the rivers are increasing in volume, being fed by the melting snows at their mountain sources far to the north. The swift Tigris, which is 1146
miles long, begins to rise early in March and reaches its highest level in May; before the end of June it again subsides. More sluggish in movement, the Euphrates, which is 1780 miles long, shows signs of rising a fortnight later than the Tigris, and is in flood for a more extended period; it does not shrink to its lowest level until early in September. By controlling the flow of these mighty rivers, preventing disastrous floods, and storing and distributing surplus water, the ancient Babylonians developed to the full the natural resources of their country, and made it--what it may once again become--one of the fairest and most habitable areas in the world. Nature conferred upon them bountiful rewards for their labour; trade and industries flourished, and the cities increased in splendour and strength. Then as now the heat was great during the long summer, but remarkably dry and unvarying, while the air was ever wonderfully transparent under cloudless skies of vivid blue. The nights were cool and of great beauty, whether in brilliant moonlight or when ponds and canals were jewelled by the lustrous displays of clear and numerous stars which glorified that homeland of the earliest astronomers.
Babylonia is a treeless country, and timber had to be imported from the earliest times. The date palm was probably introduced by man, as were certainly the vine and the fig tree, which were widely cultivated, especially in the north. Stone, suitable for building, was very scarce, and limestone, alabaster, marble, and basalt had to be taken from northern Mesopotamia, where the mountains also yield copper and lead and iron. Except Eridu, where ancient workers quarried sandstone from its sea-shaped ridge, all the cities were built of brick, an excellent clay being found in abundance. When brick walls were cemented with bitumen they were given great stability. This resinous substance is found in the north and south. It bubbles up through crevices of rocks on river banks and forms small ponds. Two famous springs at modern Hit, on the Euphrates, have been drawn upon from time immemorial. "From one", writes a traveller, "flows hot water black with bitumen, while the other discharges intermittently bitumen, or, after a rainstorm, bitumen and cold water.... Where rocks crop out in the plain above Hit, they are full of seams of bitumen."[30] Present-day Arabs call it "kiyara", and export it for coating boats and roofs; they also use it as an antiseptic, and apply it to cure the skin diseases from which camels suffer.
Sumeria had many surplus products, including corn and figs, pottery, fine wool and woven garments, to offer in exchange for what it most required from other countries. It must, therefore, have had a brisk and flourishing foreign trade at an exceedingly remote peri-od. No doubt numerous alien merchants were attracted to its cities, and it may be that they induced or encouraged Semitic and other raiders to overthrow governments and form military aristocracies, so that they themselves might obtain necessary concessions and achieve a degree of political ascendancy. It does not follow, however, that the peasant class was greatly affected by periodic revolu-tions of this kind, which brought little more to them than a change of rulers. The needs of the country necessitated the continuance of agricultural methods and the rigid observance of existing land laws; indeed, these constituted the basis of Sumerian prosperity. Conquerors have ever sought reward not merely in spoil, but also the services of the conquered. In northern Babylonia the invad-
ers apparently found it necessary to conciliate and secure the continued allegiance of the tillers of the soil. Law and religion being closely associated, they had to adapt their gods to suit the requirements of existing social and political organizations. A deity of pastoral nomads had to receive attributes which would give him an agricultural significance; one of rural character had to be changed to respond to the various calls of city life. Besides, local gods could not be ignored on account of their popularity. As a result, imported beliefs and religious customs must have been fused and absorbed according to their bearing on modes of life in various localities. It
is probable that the complex character of certain deities was due to the process of adjustment to which they were subjected in new environments.
The petty kingdoms of Sumeria appear to have been tribal in origin. Each city was presided over by a deity who was the nominal owner of the surrounding arable land, farms were rented or purchased from the priesthood, and pasture was held in common. As
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in Egypt, where we find, for instance, the artisan god Ptah supreme at Memphis, the sun god Ra at Heliopolis, and the cat goddess Bast at Bubastis, the various local Sumerian and Akkadian deities had distinctive characteristics, and similarly showed a tendency to absorb the attributes of their rivals. The chief deity of a state was the central figure in a pantheon, which had its political aspect and influenced the growth of local theology. Cities, however, did not, as a rule, bear the names of deities, which suggests that several were founded when Sumerian religion was in its early animistic stages, and gods and goddesses were not sharply defined from the various spirit groups.
A distinctive and characteristic Sumerian god was Ea, who was supreme at the ancient sea-deserted port of Eridu. He is identified with the Oannes of Berosus,[31] who referred to the deity as "a creature endowed with reason, with a body like that of a fish, with feet below like those of a man, with a fish's tail". This description recalls the familiar figures of Egyptian gods and priests attired in the skins of the sacred animals from whom their powers were derived, and the fairy lore about swan maids and men, and the seals and other animals who could divest themselves of their "skin coverings" and appear in human shape. Originally Ea may have been
a sacred fish. The Indian creative gods Brahma and Vishnu had fish forms. In Sanskrit literature Manu, the eponymous "first man",
is instructed by the fish to build a ship in which to save himself when the world would be purged by the rising waters. Ea befriended in similar manner the Babylonian Noah, called Pir-napishtim, advising him to build a vessel so as to be prepared for the approaching Deluge. Indeed the Indian legend appears to throw light on the original Sumerian conception of Ea. It relates that when the fish was small and in danger of being swallowed by other fish in a stream it appealed to Manu for protection. The sage at once lifted up the fish and placed it in a jar of water. It gradually increased in bulk, and he transferred it next to a tank and then to the river Ganges.
In time the fish complained to Manu that the river was too small for it, so he carried it to the sea. For these services the god in fish
form instructed Manu regarding the approaching flood, and afterwards piloted his ship through the weltering waters