The Chinch Bug and Its Control. 25 
gating infested rows and preventing the bugs from crossing into 
noninfested ones. It usually makes a nearly perfect barrier with 
one round trip on any one trail, and two or more trails may be made 
between corn rows in a comparatively short time. For laying an oil 
or creosote barrier, the groove furnishes the most economical trail, 
holding the oil in a narrow line and limiting any collection of oil 
strictly to the deepest part of the groove. Oil poured on a natural 
or a flat surface, a ridge, or the bottom of a plow or lister furrow, 
will spread out and sink into the soil, leaving a passable surface for 
the chinch bugs, much sooner than where its spread is limited to a 
groove as just described. The groove drag reduces the chance of 
accidentally bridging the oil line by pushing clods into it with the feet 
when renewing the oil. It also forms a convenient path for a two- 
wheeled vehicle carrying an oil container from which the oil is 
allowed to flow through an adjustable cock at the bottom. 
OTHER KINDS OF DRAGS. 
The trench drag is a special contrivance for pulverizing and com- 
pacting the soil in a furrow previously made with plow or liter. 
It perhaps serves this purpose somewhat better than a log or barrel, 
in that it fits the furrow more snugly and can be weighted as much 
as desired with sacks of sand. It is made of two pieces of lumber 
2 by 12 inches and 2 by 14 inches, respectively, and 5 feet long; the 
12-inch plank being spiked to the 14-inch one flush with one edge 
and at right angles with it, and the top of the drag being reinforced 
by a short piece nailed across each end. 
A double-trench drag, making a double-barrier path, has also been 
successfully used. It is made of three 2 by 12-inch planks and one 2 
by 14-inch plank, 4 feet long; one 12-inch piece being spiked flush 
with an edge of the 14-inch piece, a second 12-inch piece to the upper 
edge of the first 12-inch piece, and the third to the lower edge of the 
second. It is reinforced by a piece across each end and by two more 
pieces across the top and weighted as required. 
The straddle drag, used for smoothing and compacting an elevated 
barrier made by plowing a furrow and then back-furrowing to make 
a ridge, is made by spiking a 2 by 12-inch plank 6 feet long flush with 
one edge of a plank 2 by 14 inches by 6 feet at right angles to it, 
the front ends being rounded off. A rectangular piece 7 feet long, 
cut to fit into the angle, is nailed to the inside flush with the front 
end, extending a foot beyond the hind end, serving to make a groove 
for an oil or creosote line on top of the ridge. The inside of the drag 
is then lined with galvanized iron. A narrow weighting platform, 
made by nailing three cross braces of 2 by 4 inch plank 13 feet long 
across the top and fastening two planks 2 by 4 inches by 6 feet to 
them, completes the drag. 
