involved introduces a marked change in the time judgment. Comparison
with Table II. shows that in the cases of all except _Sh_ and _Sn_ the
variation _RRL_ shortens the standard subjectively, and that _RLL_
lengthens it; that is, a local change tends to lengthen the interval
in which it occurs. In the case of _Sh_ neither introduces any change
of consequence, while in the case of _Sn_ both values are higher than
we might expect, although the difference between them is in conformity
with the rest of the results shown in the table.

Another set of experiments was made on subject _Mr_, using taps on the
middle finger of the left hand and a spot on the forearm fifteen
inches from it; giving in one case two taps on the finger and the
third on the arm, and in the other one tap on the finger and the
second and third on the arm; designating the orders as _FFA_ and _FAA_
respectively. Sixty series were taken, and the values found for the
average _ET_ were 4.52 secs, for _FFA_ and 6.24 secs, for _FAA_, _ST_
being 5.0 secs. This shows 0.5 sec. more difference than the
experiment with two hands.

Next, experiments were made on two subjects, with conditions the same
as in the work corresponding to Table IV., except that the distance
between the fingers stimulated was only five inches. The results of
this work are given in Table V.


TABLE V.

_ST_= 5.0 SECS. TWO HANDS. 5 INCHES.

Subject RRL. RLL. No. of Series.