ou feel
the bone slipping into place, slide your thumbs out to the inner side of
the cheek to prevent biting when the jaws snap together with the
reducing of the dislocation.

(b) _Fractures_--_Broken bones_--There are two classes of fractures:

1. _Simple_--In a simple fracture the bone is broken, but the skin is
not broken; that is, there is no outward wound.

2. _Compound_--In a _compound_ fracture not only is the bone broken, but
the jagged ends pierce through the skin and form an open wound. This
makes it more dangerous as the possibility of infection by germs at the
time of the accident, or afterward, is added to the difficulty of the
fracture.

_Symptoms_--As in dislocation, you should be familiar with the main
symptoms of a broken bone.

1. When you look at the injured part it may or may not look like its
mate on the other side. In the more severe fractures it usually does
not.

2. When you try to move it you find more motion than there should be, if
the bone has broken clear through; that is, there will seem to be a
joint where no joint should be.

3. The least movement causes great pain.

4. The swelling is usually rapid.

5. The discoloration (black and blue) appears later; not at once, unless
there is also a superficial bruise.

6. The patient is unable to move the injured part.

7. You may hear the grate of the ends of the bone when the part is
moved, but you should not move the injured bone enough to hear this,
especially if the limb is nearly straight; the detection of this sound
should be left for the doctor.

_Treatment_--Send for a doctor at once, and if it will be possible for
him to arrive soon, make the patient as comfortable as possible and wait
for him. However, if it will be some time before the doctor can arrive
you should try to give such aid as will do no harm and will help the
sufferer.

You must handle the part injured and the patient with the utmost
gentleness to avoid making a simple fracture into a compound one, or
doing other injury, and also to give him as little additional suffering
as possible. You will need to get the clothing off the part to be sure
of what you are doing. Rip the clothing in a seam if possible when the
fracture is in an arm or leg, but if this cannot be done, you will have
to cut the material. Do not try to move the broken bone trying to get
off a sleeve or other part of the clothing.

With the greatest gentleness put the injured part, for instanc