20 FARMERS’ BULLETIN 657. 
attempt to climb the sides. If holes are dug across the bottom at 
distances of, say, 30 or 40 feet, the bugs will fall into them and can be 
still more easily disposed of by the use of kerosene. That both of 
these measures are thoroughly practicable the writer can attest by 
ample personal experience, and he knows that under most conditions 
that are likely to obtain prompt and efficient application is all that 1s 
necessary. During showery weather the tar line is far preferable to 
the furrow, but in excessively dry, windy weather the dust will adhere 
to the tar and encrust the surface so that the bugs can soon easily 
. 
Fia. 9.—The two operations in the preparation of chinch-bug barriers; one, the plowing of the furrow; 
and the other, the dragging of a log or other heavy cylindrical object of the proper size back and forth 
in the furrow to keep the soil pulverized and prevent the bugs from making their way out of the sand. 
(Original.) 
walk across. This is a case where a farmer must use his own judg- 
ment. During a few days this work will demand the closest watching 
and application, but fields of corn can be protected thoroughly and 
effectually if these measures are faithfully carried out, and the 
expense of time and money will be found to be less than in almost 
any other plan that has been discovered up to this time. In no case 
has a field attacked by a migrating army of chinch bugs come under 
the writer’s observation that could not have been saved from very 
serious injury by the prompt use of either of these measures, although 
