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Whatever is used should be applied for most species just before the 




















first warm spell of spring. At the very outset of an attack a very 
thin application of kerosene, kerosene emulsion, or creosote by lightly 
brushing or spraying it over the infested parts, would kill the beetles 
with which it came in contact. 
Protective measures against the two-lined chestnut borer should 
begin about the first of May in the latitude of the District of Columbia 
and a little later in more northern and colder localities. 
F. H. CHITTENDEN, 
Assistant Entomologist. 
Approved : 
JAMES WILSON, 
Secretary. 
WASHINGTON, D. C., July 14, 1897. 
=) 
