224 
feed upon stored products of a character similar to copra it is only 
necessary to mention them in this connection. 
In the case of these, and of most other injurious insect forms, preven- 
tive measures are always most advisable and if care is taken in packing 
and shipping the copra, receptacles into which the insects can not find 
entrance being employed, their ravages will be prevented. It is difficult 
to exterminate them if once they secure a lodgment in a mass of copra. 
Carbon bisulphide, which might be used successfully against similar 
insects in grain, would probably prove detrimental to copra owing to 
its power of dissolving oil. 
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