(1) Typical Gezireh soil from a point 10 miles south of Khartoum near the Blue Nile.
(2) Typical Gezireh soil from a point 2 miles south of Khartoum near the White Nile.
(3) White Nile side under cultivation in 1904.
(4) White Nile side below flood level.
(5) Blue Nile side, not so common as (1).
(6) The sandy soil generally within 5 miles of Khartoum.
Nos. 1, 2, 5, and 6 are above high flood level of both Niles.
“The nitrogen and salt were determined in the samples, as received, without drying.
| Nos. | 1 | 2 | 3 | 4 | 5 | 6 |
|---|---|---|---|---|---|---|
| Nitrogen | 0·078 | 0·059 | 0·062 | 0·057 | 0·056 | 0·052 |
| Common salt | 0·050 | 0·020 | 0·010 | 0·090 | 0·170 | 0·020 |
“All contain abundance of carbonate of lime; Nos. 1 and 2 might almost be called calcareous. All gave a strong reaction for phosphoric acid, and there is therefore every reason to believe that they are rich in this ingredient. So far as the texture of the soils is concerned, little can be said except that they differ from those previously examined for Kena Mudirieh, in containing a large amount of coarse sand 1-3 m.m., which is entirely absent in most Egyptian soils; No. 6 would probably be too light for agricultural purposes in its present condition.