151 



- I S9- White ant. 

 a) adult mate ; (d) same side view; b, a, d, e fin 'I /'. structural 

 details, a, d and e enlarged; b c, and f, greatly enlarged . 

 (From U. S. Dept. Agric.) 



and sugar or strychnine and sugar can be put down in 

 these galleries as a poison bait. The insects which are 

 killed by this are eaten by other insects in the nest and 

 the poison becomes widely distributed. A mixture of oak 

 or spruce sawdust and either of the poisons mentioned 

 may also be used as a bait. If a small box containing this 

 mixture is placed in a building where wood ants are 



