(2) The strip of soil lying between the above-mentioned area and the centre line of the farm. This is patchy—in part loam, in part clay loam. Salt occurs in some areas, and by seepage from the old main canal of the farm it is more than probable that the salt contents generally have been increased.

There is also a khor or depression running diagonally through these two sections.

Consequently in the past rains have washed salts from both the river bank and the high land on the east, and by evaporation increased the percentage in this depression.

(3) The eastern strip of the farm. In this section there is less variation than elsewhere. The soil appears to be in a state that may be termed " natural " in comparison with the other sections described. Also it seems to be soil belonging to the " old alluvium " and not to the " new alluvium " as on or near the river bank ; and in many ways, by its mechanical construction, it should provide better comparison with the great mass of soil to be found through the principal agricultural districts of the Sudan, and, above all, the Gezira.

' This third or eastern section has therefore been set apart for comparative experiments with cotton, wheat and beans.

The second or middle section is partly occupied by a road running the entire length of the farm and partly by the lateral drain which occupies the position of the old main canal. , The remainder and half of the first or western section is utilised for the growth of stock feed, trees, vegetables and breeding plots which do not require a uniform soil, as no comparative data are sought.

The other half of the western section is planted for revenue purposes with the same rotation of crops as is found on the experimental area, but no comparative figures are taken from it. The whole of the southern end of the farm is occupied by trees, staff houses, stores and grazing paddocks for stock. (See Plan of Farm.)

Canalisation.—The farm is divided into twenty-three " Hoshes." These contain a varying number of feddans as the east and west boundaries are not parallel.

The main canal from the pumping station runs along the west boundary of the farm until it reaches Hosh 13, when it turns and runs eastward as a high level canal across the central depression, ending on that boundary. A branch canal continues from Hosh 13 to the south end, and another from the end of the main canal runs along the east boundary.

The hoshes are arranged in groups of four. Each group is irrigated by a secondary canal and separated from its neighbour by a path. (See Plan.)

The hoshes are demarcated into feddans by " Gadwels," or watercourses, which draw their water from the secondary canals, and distribute it to the land through smaller distributory channels. In the case of the wheat crop the feddan is divided by low earth banks into 100 beds, or " hods " ; for cotton and beans, however, the land is ridged to facilitate cleaning, and the feddan divided into forty ridges and furrows intersected by the distributory channels. (See Plan.)