The fourth and fifth years of Freeland were also marked by the construction of a net of canals and aqueducts, both for Eden Vale and for the Dana plateau. The canals served merely to carry the storm-water into the Dana; whilst the refuse-water and the sewage were carried away in cast-iron pipes by means of a system of pneumatic exhaust-tubes, and then disinfected and utilised as manure. The aqueducts were connected with the best springs in the upper hills, and possessed a provisional capacity of supplying 22,000,000 gallons daily, and were used for supplying a number of public wells, as well as all the private houses. By the addition of fresh sources this supply was in a short period doubled and trebled. At the same time all the streets were macadamised; so that the cleanliness and health of the young towns were duly cared for in all respects. The board of education had made no less vigorous efforts. A public opinion had grown up that the youth of Freeland, without distinction of sex and without reference to future callings, ought to enjoy an education which, with the exception of the knowledge of Greek and Latin, should correspond to that obtainable, for example, in the six first classes in a German gymnasium. Accordingly, boys and girls were to attend school from the age of six to that of sixteen years, and, after acquiring the elements, were to be taught grammar, the history of literature, general history, the history of civilisation, physics, natural history, geometry, and algebra.