The building and equipment of an agricultural laboratory and the publication

of the present Report have been rendered possible by the generosity of Mr.

Otto Beit.

We are indebted to Dr. William Beam, Research Chemist, and to Mr. G. A.

Freak, Assistant Chemist, Wellcome Laboratories, Khartoum, for all analytical

determinations recorded in the following pages ; to Messrs. G. E. Hunt and

J. Barty, Lecturers in Civil Engineering, Gordon College, for numerous surveys,

plans, specifications and technical guidance ; to Messrs. G. H. Grabham and

S. C. Dunn, Government Geologists, for a preliminary survey of the farm site

and subsequent investigations of soils, water-levels and drainage problems ; and

to Mr. H. H. Eang, Government Entomologist, for valuable assistance in the

control of insect pests.

Messrs. R. Hewison, Assistant Director of Agriculture, and W. A. Davie,

Inspector of Agriculture, have always placed at our disposal their very extensive

experience of local agricultural conditions, and have in many ways contributed

to the progress of our undertakings. Timely assistance proffered by the

Director of Steamers has, on several occasions, relieved a crisis in irrigation

arising from engine trouble, while any measure of success obtained from the

organisation of native agriculture must be attributed in large part to the

invaluable co-operation of Mr. P. Munro, Inspector of the District.

E. R. SAWER.

1st November, 1915.