NATURAL RESOURCES—LITTLE. 237 
Nothing perhaps could better illustrate than helium the changing 
relation which specific natural resources may bear to military sup- 
plies. The usefulness and value of any natural resource for military 
as for industrial purposes will always be conditioned primarily on 
our own ability to employ them to advantage. Such values are not 
intrinsic, but are established by research, and their basis is scientific 
and technical knowledge. The effective encouragement of science is 
the price of military efficiency. 
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