s in war by the practice or rehearsal of movements in
military order and the handling of arms, and, psychologically, the
method of producing in the individual soldier habits of self-control and
of mechanically precise actions under disturbing conditions, and of
rendering the common instinctive will of a body of men, large or small,
amenable to the control of, and susceptible to a stimulus imparted by
its commander's will.

(2) A furrow made in the soil in which seed may be sown, and a machine
used for sowing seed in such furrows (see SOWING). The word is somewhat
doubtful in origin. It may be the same as an obsolete word "drill," to
trickle, flow in drops, also a small stream or flow of water, a rill,
and is possibly an altered form of "trill."

(3) In zoology, the native name of a large short-tailed west African
baboon, _Papio leucophaeus_, closely allied to the mandrill (q.v.), but
distinguished by the absence of brilliant blue and scarlet on the jaws
of the fully adult males.

[Illustration]

(4) The name of a fabric made in both linen and cotton, and commonly
bleached and finished stiff. The word is a shortened form of "drilling,"
from the German _drillich_, or "three-threaded," and is so named because
the weave originally used in its construction is what is termed the
three-leaf twill, nine repeats of which appear in the accompanying
figure, while immediately below the design is an intersection of all the
nine threads with the first pick. It is essentially a warp-faced fabric;
that is, the upper surface is composed mostly of warp threads. In the
figure it will be seen that two out of every three threads appear on the
surface, and, by introducing a greater number of threads per inch than
picks per inch, the weft is made to occupy a still more subordinate
position so far as the upper surface of the cloth is concerned. Although
the weave shown is still extensively used in this branch, there are
others, e.g. the 4-thread and the 5-thread weaves, which are employed
for the production of this cloth. Large quantities of drill are shipped
to the Eastern markets and to other sub-tropical centres, from which it
is sold for clothing. In temperate climates it forms a satisfactory
material for ladies' and children's summer clothing, and it is used by
chefs, hairdressers, provision merchants, grocers, buttermen, painters
and decorators, &c., while many of the long jackets or overalls, such as
those worn by many mill and fact