Steam was still provisionally employed as motive power in agriculture; but provision was being made on a very large scale to substitute electric for steam force. The motive power for the electric dynamos was derived from the Dana river where, after being supplemented by two large streams from the hills just below the great waterfall, it was broken into a series of strong rapids and cataracts as it hurried down to the lower land. These rapids and cataracts were at the lower end of the tableland which, as indicative of the use we made of it, we named Cornland. It was these rapids and smaller cataracts, and not the great waterfall of 800 feet, that were utilised for agricultural purposes. These afforded a total fall of 870 feet; and, as the river here already had a great body of water, it was possible, by a well-arranged combination of turbines and electro-motors, to obtain a total force of from 500,000 to 600,000 horse-power. This was far more than could be required for the cultivation of the whole of Cornland even in the intensest manner. The provision made for the next year was calculated at 40,000 horse-power. Well-isolated strong copper wires were to convey the force generated by twenty gigantic turbines in two hundred dynamos to its several destinations, where it had to perform all the labours of agriculture, from ploughing to the threshing, dressing, and transport of the corn. For a network of electrical railways was also a part of this system of agricultural mechanism. The great Dana cataract, with what was calculated to be a force of 124,000 horse-power, was utilised for the purposes of electric lighting in Eden Vale and in the town on the Dana plateau. For the time being, for the public lighting it sufficed to erect 5,000 contact-lamps a little more than 100 feet high, and each having a lighting power of 2,000 candles. These used up a force of 12,000 horse-power. For lighting dwelling-houses and isolated or night-working factories, 420,000 incandescent-lamps were employed. This required a force of 40,000 horse-power; so that the great cataract had to supply a force of 52,000 horse-power to the electro-motors. This was employed during the day as the motive power of a net of railways, with a total length of a little over 200 miles, which traversed the principal streets and roads in the Dana plateau and Eden Vale. In the evening and at night, when the electricity was used for lighting purposes, the railways had to be worked by dynamos of several thousand horse-power. In this way altogether nearly two-fifths of the available force was called into requisition at the close of the fifth year; the remaining three-fifths remained for the time unemployed, and formed a reserve for future needs.