97 
MEANS OF CONTROL 
e most boring insects, the ash-borer is very difficult to 
¥ wood, where it is di r impossible to reach them. 
In the case of badly nets oe they eaoul 7 De cut down and 
destroyed in order to prevent ging attacking 
healthy trees. 
Probably the best general means of protecting this as well as 
natur: 
authority that birds do ten times as much in the protection of 
ying and oét with no expense. 
The destruction of the adults of such insects as the ash-borer 
will go far toward eliminating this pest. The adults of the ash- 
i id so 
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ry 
2 
Great emphasis should be placed on the value of birds in com- 
bating this and other insect pests. 
FRED J. SEAVER 
PRACTICAL pie Plier eceoe THE FUMI- 
GATION OF GREENHOUSE 
ioe use of various fumian; _especially of Dyetrocyanic gas, 
rious 
insects that are injurious to plants grown in eecihoise culture. 
f s ofte: 
perplexing to gardeners, and while the condition of the plants 
may appear the same and present the same relative degree of 
