+4.1
—10.9
—15.4
—13.6

—19.1
—24.0
—18.6

+4.6
—5.2

—6.4



—2.95
+10.2
+13.1
+13.9

+ 14.1

+10.2

+9.9

—6.7

+5.5

+7.8



0.00
—0.12
—3.5
—0.45

+0.45

+2.8

—1.35

—1.9
+0.3

+0.95



+0.55
—1.1
—0.5
-1.35

+1.65

+1.0

—0.25

—0.65
—1.65

—1.45



a and b 40.0 : 37.0

a and c 40.0 : 21.7 ;

a and d 40.0 : 26.9 :

a and e 40.0 : 15.5 ;

b and c 37.0 : 26.7

b and d 37.0 : 23.2

b and e 37.0 : 17.0 :

c and d 21.7 : 18.8 :

c and e 21.7 : 12.1



: 40.1 : 40.0
39.8 : 40.0
45.5 : 40.0
46.3 : 40.0

: 55.5 : 37.0
: 58.6 : 37.0
; 51.7 : 37.0

24.5 : 21.7
31.8 : 21.7



d and e 15.5 : 13.8 :: 23.1 : 15.5



—3.0
—19.3
—13.1
—25.5

—10. 25

—13.8

—20.0

—2.9
—9.6

—1.7



+0.1
+0.1
+4.45
+3.6

+18.3
+21.6
+14.7

+2.8
+10.1

+7.6



—3.2
—2.3
—5.0
—1.4

—0.35
+0.05
—1.8

0.00
—0.6

—1.0



—1.0
—4.4
—2.5
—1.85

—1.55
—0.3

—1.4

+0.05
—1.1

—0.9



A STUDY OF WEBER'S ILLUSION



111



TABLE XSrU— Continued
Equivalence for Five Points— Volar Side'of Arm-hand



Observer B.
a and b
a and c
a andd
a and e

b and c
b and d
b and e

c and d
cand e



40.0 :46.9 ::33.7 :
40.0 : 22.6 :: 51.0 ;
40.0 : 24.6 :: 60.1 :
40.0 : 19.0 :: 60.2

46.9 : 31.7 :: 61.9 :
46.9 : 33.1 :: 56.3 :
46.9 : 22.4 :: 60.0 ;

22.6 : 17.2 :: 31.2
22.6 : 11.5 :: 33.2 :



dande 24.6 : 23.9 :: 33.7
Observer M.
