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ATHLETICS AND CROSS-COUNTRY 129
sides of the wood body and, in the exact centre of the discus, a
means for securing the correct weight. The brass plates shall be
circular in form, having a diameter of not less than 2 ins. nor more
than
21
ins. Each side of the discus shall be a counterpart of the
other side, and shall have no indentations, projecting points or sharp
edges. The sides shall taper in a straight line from the beginning of
the curve of the rim to a line a distance of i in. from the centre of
the discus.
The largest dimension shall be a circle not less than 88 ins. in
diameter. The thickness through the exact centre, on a line per-
pendicular to the diameter, shall be not less than
13
ins. The thick-
ness at I in. from the centre shall be exactly the same as at the centre.
The thickness of the rim at a distance of
4
in. from the edge shall be
not less than in. The edge shall be rounded on a true circle.
The weight of the discus shall be not less than 4
3
lbs. complete as
thrown.
A metal discus complying with the official measurements, con-
ditions and weight may be used.
In other respects, the rules for Throwing.the Hammer apply.
Throwing the Javelin
92. (a) The javelin shall be thrown from behind a scratch line
marked on the ground, at least 12 ft. in length.
(b) The javelin must be held at the grip.
(e) It is a foul throw if the point of the javelin does not touch the
ground before any part of the shaft, or when the competitor crosses
the scratch line or its extension.
(d) The javelin shall be of wood with a sharp iron or steel point.
It shall be constructed in such way that the space between the fore-
most point and the centre of gravity is not longer than 3 ft.
7's
ins. or
shorter than 2 ft. 1
1
2
ins.
It shall have, about the centre of gravity, a grip formed of a binding
6 , ins. broad, of whipcord, without thongs or notches in the shaft,
and shall have no other holding than the above-mentioned binding,
whose circumference at either edge shall not exceed the circum-
ference of the shaft by more than I in.
The length shall not be less than 8 ft. 6 ins., the weight not less
than I lb. 12'
1
oz. complete as thrown.
RULES FOR PARTICULAR EVENTS
Hurdle Races
94 A hurdle should consist of two wood uprights, or standards,
supporting a rectangular wood frame or gate. The hurdle may be
adjustable' in height, but must be rigidly fastened at the required
height for each event. The width of the hurdle must be not less
than 4 ft.
95. (a) Hurdle races should be over ten flights of hurdles.
(b) A competitor trailing his leg or foot alongside any hurdle
shall he disqualified.