The height that the water has to be raised being 2 _metres_, and a pump of one horse power, raising 60 _litres_ per second for one _metre_, pumps of five and six horse power will give the required quantity. We establish therefore steam pumps of five and six horse power at the head of the Canal, as well as a barrage lock with gates both ways, in order to guard against the great risings of the Nile, and to retain the waters of the Canal when the river has subsided. The Company will thus be able to fertilise 100,000 _feddans_, of which 60,000 will be by irrigation, and which will give the richest produce. The Canal follows the course of the Zafranieh as far as Tell el Yaoudieh, where there is a lock of 2 _met._, 50 fall; it then leaves this ancient water-course to the left as far as _Ras-el-Wady_: in this interval there are three other locks. Leaving _Ras-el-Wady_, the track of the Canal is directed so as to keep it as high as possible, and to avoid the downs which occupy the whole of the valley, and are constantly moving from south to north: all these downs should therefore be fixed by seed-plots, and their superfice may perhaps be approximately estimated at 50,000 _hectares_. The valley called _Wady-Tomilat_ comprises two quite distinct parts; the first, from _Abasseh-Mollaut_ to the east as far as _Ras-el-Wady_, is well cultivated; the other from this point, as far as Lake Timsah, is uncultivated and covered with shrubs, which will furnish an excellent combustible for the manufacture of lime and bricks, as well as for the requirements of the workmen, until it is cultivated. At present the waters of the Nile spread naturally during the inundation for half the distance from _Ras-el-Wady_ to Lake Timsah. The _Ras-el-Wady_ channel extends along the valley with a depth of 7 _metres_, and it opens into Lake Timsah with a double lock, forming together a fall of 7 metres. Above this lock there is a water-course for irrigation running towards Suez, and a conduit of water on the Charmeroi system which goes towards Pelusium, so that, for the whole extent of the Isthmus, there will be water in abundance for the use of the workmen; the water-course for irrigation is 20 _metres_ wide, 8700 _metres_ in length, and has a fall of ,04 per _kilom._, which gives a difference of 3 _met._, 48 in the level. So that at Suez the water-line of the water-course will be 7 _met._,00 - 3,48 = 3,52. The depth of the canal being 1,50, it will be seen that its bed will be 2,02 above the level of low water, and near about that of high water. There will consequently be no fear of the infiltration of salt water. The section of the water-course thus determined, will rule for one-third of its length, but its breadth will be reduced to 15 _metres_ for a second third, and to 10 _metres_ for the remaining third.