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like ipil, Intsia bijuga, and molave, P^itc.v parviflora, showed a 

 marked degree of resistance. The resistance was found to be 

 due, not to harchiess of the wood, but to sesquiterpene, an or- 

 ganic compound contained in the wood and readily extracted 

 with benzine or alcohol. Camphor green oil was found to con- 

 tain 25% of this alcohol and to be entirely satisfactory for the 

 treatment of wood against termite attack. The anthracene oil 

 fractionated from coal tar was also found to be a preventative. 

 Where termite proof construction cannot be followed the thor- 

 ough creosoting of footings and joints and the liberal use of 

 paint on walls and roof undoubtedly afford a certain degree of 

 protection against termite invasion. In some localities where 

 termites are especially destructive baits with which arsenic is 

 combined are always placed on the ground lot before a building 

 is raised, to ward off termite attack. 



