[8] Fechner, G. Th., 'Elem. d. Psychophysik,' Leipzig, 1889; 2.
Theil, S. 328.

I have already said that these filled spaces were invariably
overestimated and that the slower the movement, the greater, in
general, is the overestimation. In addition to the facts just stated I
found also, what Hall and Donaldson[9] discovered, that an increase in
the pressure of a moving point diminishes the apparent distance.

[9] Hall, G. St., and Donaldson, H.H., 'Motor Sensations on the
Skin,' _Mind_, 1885, X., p. 557.

Nichols,[10] however, says that heavy movements seem longer and light
ones shorter.

[10] _Op. citat.,_ p. 98.


V.


There are several important matters which might properly have been
mentioned in an earlier part of this paper, in connection with the
experiments to which they relate, but which I have designedly omitted,
in order not to disturb the continuity in the development of the
central object of the research. The first of these is the question of
the influence of visualization on the judgments of cutaneous
distances. This is in many ways a most important question, and
confronts one who is making studies in tactual space everywhere. The
reader may have already noticed that I have said but little about the