subject may have thoughtlessly said before that it was at _P_ or _P'_,
the points he had nominally had in mind.

But the image 2 or 3 may indeed be localized quite over the final
fixation-point. In this case the light is to be looked to. It is too
bright, as it probably was in the case of Dodge's experiments. It must
be further reduced; and with the eye at rest, the control (case I)
must be repeated. In the experiments here described it was always
found possible so to reduce the light that the distinct, entire image
of the dumb-bell (2, Fig. 7) never appeared localized on the final
fixation-point, although in the control, _H_, of Fig. 7:1, was always
distinctly visible.

With these two precautions taken, the image on the final
fixation-point is like either 3, 4, or 5. Shape 5 very rarely appears,
while the trained subject sees 4 and 3 each about one half the times;
and either may be seen for as many as fifteen times in succession.

Shape 4 is of course exactly the appearance which this experiment
takes to be crucial evidence of a moment of central anæsthesia, before
the image is perceived and during which the stimulation of the handle
_h_ completely elapses. Eight subjects saw this phenomenon distinctly
and, after some training in timing their eye-movements, habitually.
The first appearance of the handleless image was always a decided
surprise to the subject (as also to the writer), and with some
eagerness each hastened to verify the phenomenon by new trials.

The two ends (_e_, _e_) of the dumb-bell seem to be of the same
intensity as in shape 2 when seen in reflex movement. But there is no
vestige whatsoever of a handle. Two of the subjects stated that for