Reports to the Foreign Office. 165 
To The Civil Secretary, 
Sudan Government, Cairo, Egypt. 
British Museum (Nat. Hist.), 
Cromwell Road, S.W. 
Dear Sir, — Referring to Count Gleichen’s letter of the 2nd inst. 
(No. C.S.S. 4/1259), I am desired by the Director to send you herewith a 
report on the subject of locust plagues in the Sudan, with notes and 
suggestions for the destruction of the locusts. 
I am to point out that while Count Gleichen’s letter of the 2nd inst. 
refers to locusts, his letter of the 7th August is on the subject of White 
Ants. A separate report will be forwarded to you in due course in regard 
to this last question, which is forming the subject of investigation by the 
Museum. 
I remain, etc., 
(Signed) C. E. Fagan. 
Report on Locust Plagues in the Sudan. 
At the request of the Foreign Office, the following information 
regarding the Locust Plagues in the Sudan lias been despatched for 
the use of the Sudan Government. 
Particular attention is called to sections B. 2, 3, and 4 in the Report. 
Experiments should certainly be tried in connection with the African 
Locust fungus and the use of “ poison-baits.” 
Prevention and Remedies for Locust Plagues. 
A. Destruction by capture in, 1, trenches ; 2, traps ; 3, by burning. 
This was fully dealt with in the proof of a paper sent from Egypt. 
B. 1. Destruction of the eggs. 
2. Collection of “hoppers” by special machines. 
3. “ Poison-baits.” 
4. Fungoid disease. 
5. Plants poisonous to locusts. 
G. Natural enemies. 
Appendix (p. 179). 
Various locusts, North African. 
B. 1. Destruction of Eggs. 
(a) By cultivation. 
The eggs are usually laid in firm ground to guard them against natural 
enemies. 
By turning up and loosening the soil to a depth of three inches, the 
eggs can be exposed, and numbers are destroyed by birds, parasitic 
insects, etc. 
