space at the
bottom. Reaching the end, twist the rod as described for a withe, but
at one point only, bend it around the end picket and work back. Start
a second rod before the first one is quite out, slewing the two for a
short distance. Hammer the wattling down snug on the pickets with a
block of wood and continue until the top is reached. It improves the
hurdle to finish the edges with two selected rods paired, Fig. 16. A
pairing may be introduced in the middle, if desired, to give the
hurdle extra endurance if it is to be used as a pavement or floor. If
the hurdle is not to be used at once, or if it is to be transported,
it must be sewed. The sewing is done with wire, twine, or withes at
each end and in the middle, with stitches about 6 ins. long, as shown
in Fig. 16. About 40 ft. of wire is required to sew one hurdle. No. 14
is about the right size, and a coil of 100 lbs. will sew 40 hurdles.
Three men should make a hurdle in 2 hours, 2 wattling and the third
preparing the rods.

=1120. Continuous hurdle.=--If conditions permit the revetment to be
built in place, the hurdle is made continuous for considerable
lengths. The pickets may be larger; they are driven farther apart, 12
or 18 ins., and the brush may be heavier. The construction is more
rapid. The pickets are driven with a little more slant than is
intended and must be anchored to the parapet. A line of poles with
wire attached at intervals of 2 or 3 pickets will answer. The wires
should be made fast to the pickets after the wattling is done. They
will interfere with the wearing if fastened sooner. Two men should
make 4 yds. of continuous hurdle of ordinary height in one hour.

=1121. Brush revetment.=--Pickets may be set as above described and
the brush laid inside of them without weaving, being held in place by
bringing the earth up with it. In this case the anchors must be
fastened before the brush laying begins. The wires are not much in the
way in this operation.

=1122. Gabion making.--A gabion= is a cylindrical basket with open
ends, made of brush woven on pickets or stakes as described for
hurdles. The usual size is 2 ft. outside diam. and 2 ft. 9 ins. height
of wattling. On account of the sharp curvature somewhat better brush
is required for gabions than will do for hurdles.

=The gabion form=, Fig. 17, is of wood, 21 ins. diam., with
equidistant notches around the circumference, equal in number to the
number of pickets to be used, usually 8 to