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Office of the Quartermaster General - 2 - August 23, 1950 
Our specimens were kept in special containers and 
were put out regularly during the day on racks in order that they 
might dry. Ants are especially injurious unless there is proper 
protection against them. I beg to advise that the use of insecticide 
and the spray gun on the supports of the dry racks and around the 
storage containers was wholly effective so that we had no trouble 
whatever. 
In addition to this, we used the spray against flies 
and mosquitoes in our camp quarters, and against cockroaches, 
flies and mosquitoes in the native houses. In all instances it proved 
entirely effective and the amount required for protection was sur¬ 
prisingly small. 
The compact features and sturdy construction of the 
Eng strum Gum were especially valuable in view of the rough nature 
of travel. The gun did not leak fluid and held up in every way during 
the work. I have added this Eng strum Gun and type of insecticide 
to the items listed for permanent field equipment for future expeditions 
of this kind. 
I am 
Very truly yours, 
A. Wetraore, 
Secretary. 
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