Reports to the Foreign Office. 165 



Bbitish Museum (Nat, Hist.), 



CromweU Road, S.W. 



To The Civil Secretary, 



Sudan Government, Cairo, Egypt. 



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 follo\nng information 

 regarding the Locust Plagues in the Sudan has 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 jjaper 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. 



6. 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. 



