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NERVE VIBRATIONS. 61
fore or long finger in the orbit, and feeling it as it lies against
the roof just before it goes into the foramen. In these two
situations, it is better to make frictions over it with the back part
of the nail, taking care not to apply the edge. (ISTote the strong
bending of the last phalanx in fig. 36.)
On the forehead we first trace the nerve from the notch upwards
under light frictions, and we find it lying like a thin cord, curving
somewhat outwards towards the temples. Having delineated its
course, the vibrations are begun, and made time after time in the
centripetal direction. (Fig. 37.)
Pig. 3 8 shows how the thumb is applied to the forefinger when
we work with the back of its nail,—viz. not at the very tip, but
Fig. 38.
nearer the last phalangeal joint. This imparts greater softness to
the manipulation.
For neuralgia in this nerve, it is often enough to treat it
alone ;
but if this is not successful, I give vibrations over the
other branches from the same nerve stem.
Nervus Supratrochlearis and Nervus Nasalis.
The supratrochlear nerve comes out at the inner part of the
orbit, and it runs nearly vertically upwards.
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