text:  They completed their undertaking and returned to Khartoum at the end of 135 days during which time in obedience to the commands of their master they explored the Bahr-el-Abiad to the distance southwards of 1300 miles (turnings and windings included ) to three degrees thirty minutes north latitude and thirty-one east longitude from Greenwich where it divided into two streams; the smaller and it is very small coming from the south-west and the larger still even at the close of the dry season a very considerable river which came from the south-east upwards from the east and still more upwards from the north-east