Here are possibilities, then, for the cultivator who is ready to bring to bear all the appliances of modern science, the discoveries of practical agricultural chemistry, and, above all, the mechanical and ingenious inventions so admirable in a flat, open country, unbroken by hedge or tree.
Among the minor objects familiar to the tourist in his journey up the Nile are the various means of raising water for the irrigation of the crops. These have been, and still continue to be in many places extremely primitive, for, as before stated, the fellaheen in their conservative fashion are prone to cling to the inventions of their forefathers. Hence they may still be seen laboriously at work with their shadoofs, sakiehs, and other water-wheels worked by hand or mule power, raising the fertilising fluid to a sufficient height to be discharged and flow of itself, spreading over the patches of land requiring irrigation.
But these clumsy contrivances are giving place in the newly-reclaimed and cultivated parts of the Delta to modern machinery, urged by motive power, notably by steam, though to a great extent advantage is taken of the wind; for it is a common thing to see in the landscape the circular disc-like object, as noted at a distance, formed by a windmill with its many fans, or “vans,” standing at the edge of some canal or by one of the many wells that have been dug upon the higher grounds.
For though tract after tract may be desert, presenting nothing but coarse growth and sand ready to drift before the wind, there is not much difficulty in finding water, notably in the wide plateau known as Mariout, spreading out in the direction of the Libyan Desert from Alexandria. Here the sinking of wells results in the finding of water at depths varying from twenty to forty feet, and boring to a greater depth would doubtless produce a fuller supply, for in so flat and porous a land, within easy measurable distance of the great inland sea, there is every probability that an inexhaustible supply is within touch. And nowadays the various ingenious contrivances of the mechanical engineer are always ready, and at small cost, to supplement during the dry times the abundant supply offered by the great river. Of course, this deals solely with the higher grounds that are not reached without mechanical help by the dam-supplied network of canals that already veins the country, and projects for the increase of which are, since the opening of the great works at Assiout and Assouan, either under consideration, or already planned.
The slow, clumsy hand labour of the shadoof and the awkward cattle-worked sakieh, or earthen pot surrounded water-wheel, is now being superseded in the larger tracts of cultivation by such ingenious pieces of mechanism as the centrifugal pump, worked by steam, and so contrived that it can be utilised on the bank of river or canal, and with a suction tube turned down at any angle, so that it can be lowered into any of the common wells that are sunk in all directions. The portable steam engine used in connection therewith is one of the grandest slaves of civilisation, playing its part on the large farms for traction, threshing, straw chopping, or other of the many necessities of cultivation. By means of these centrifugal pumps after the middle of November on large estates the water has to be forced into the service (estate) canals.
A ten-horse power engine, driving a ten-inch pump, will irrigate the same number of acres in twelve hours, lifting the water five feet, the cost of raising water being two shillings per acre. The small occupiers of land sometimes raise their supply from wells and canals by means of Persian wheels or Archimedean screws.
Chapter Four
At Cairo when the Nile commences its annual rise, for the first few days its tint seems to be green; but the general tone during the inundation is of a dirty red, of course due to its being thickened with the mud brought down from the south. During this rising, irrigation can be sent freely flowing over all cultivated lands, as the river continues about the level of the banks till the middle of November.
In simple language, irrigation means the turning of desert into richly fertile producing land. A great deal has been said and done, but everything points to the fact that, however great and productive a garden Egypt has been for countless years, it is still almost, as it were, in its infancy. The erection of that stupendous piece of engineering, the Assouan Dam, has already had effects that have surpassed the expectations of its projectors; and writing upon this subject, Sir William Willcocks, a gentleman whose knowledge of the position is of the highest value, points out a series of facts that are almost startling in their suggestions. He draws attention to the fact that there are still two million acres of excellent land waiting to be reclaimed after the simple fashion herein described, and then requiring to be irrigated to the full extent needed – that is to say, perennially.
These are large figures to deal with, but Egypt is a vast country, and its powers of production almost beyond belief; but everything is bound up in the one need – water supply; and it is this furnishing of life to plants, and enabling them to find it latent, as it were, in the far-spreading plains that are as yet but sand and dust, that is taking the attention of our great engineers.
Here they find room to exert their powers. It is only a year ago that we had the inauguration of the first great stride; and now we are told that the thirsty country asks for more. To fully carry out the perennial irrigation that shall fertilise the two million acres still waiting, “the country requires one milliard of cubic metres of water per five hundred thousand acres” – that is to say, four times that quantity. At the present time, with the height to which it has been already erected, the Assouan Dam holds up and supplies one milliard of these cubic metres of water in all, a sufficiency for five hundred thousand acres of agricultural and garden land. It is proposed to raise it twenty-one feet higher, with the result that its holding powers will be so vastly increased that the supply will be doubled, and hence be sufficient for another five hundred thousand acres. But even then there will be a milliard acres still waiting for a supply of water to the extent of two milliards of cubic metres of water for themselves. Whence is this supply to come?
The engineers are ready with their answer, and only ask for the capital, not to float some mad scheme, but to spread bounteously the rich water which turns, as above said, the desert into fertile land.
The plan, or project, is to form a huge reservoir in the Wady Rayan, which will with ease supply the water needed at a cost of about two million pounds – a large sum of money, but ridiculously small in comparison with the results. There is, however, a drawback in connection with this reservoir – a weakness, so to speak, which alone would render its value questionable, for while in April and May, during the flood time, its supply would be enormous, it would fall off very much in June, and furnish but very little in July.
But now in connection therewith we find the truth of the old proverbial saying, “Co-operation is strength.” Alone it would be weak, but if made now and worked in connection with the Assouan Reservoir it becomes strong, and the two being tapped in turn as the need arose, the combination would have tremendous results, one reservoir so helping the other that sufficient water could be depended upon to keep up a perennial supply.
To give Sir William Willcocks’ words:
Let us now imagine that both reservoirs are full of water, and it is April 1st. The Wady Rayan Reservoir will be opened on to the Nile and give all the water needed in that month, while the Assouan Reservoir will be maintained at its full level. In May the Wady Rayan Reservoir will give nearly the whole supply, and the Assouan Reservoir will give a little. In June the Wady Rayan Reservoir will give a small part of the supply, and the Assouan Reservoir will give the greater part. In July the Wady Rayan Reservoir will give nothing,