1368 
Now the axis of motion makes with each of the coordinate-axes 2 
angles, which are each other's supplements. Therefore VorKMANN 
uses, in imitation of Fick, for his determinations the part of the axis 
of motion, located at that side of the center of rotation, seen from 
which the muscle turns the eye according to the hands of a clock. 
The angles 2, u and rv, which I have calculated for the 6 different 
cases, are consequently not equal for the right and for the left eye 
but each other's supplements. The following table, which represents 
the results of my calculations, contains only the values found for 
the right eye. 
a b c d e f 
x; 2.9 mm.) 2.9 mm) 5.5 mm. 0.5 mm.) 9:5 mm.) 0-55omm: 
I — 4,41 „| 4.41 , j— 1.71 , |—6.71 , |j— 1.71 , |— 6.71 4 
a; LOPS rn elOL45 ee al 10253 ae 9.26 „| 10.53 „| 9.26 , 
x —15.27 „15-21 „15.27 ~, J—15.27 {15.27 Il 2 Gy 
Vo 8.24 „ 12530, 9.78 , OLE E22 OO Neer. 11 On 
Zo DE Ar 125200 12520008 125200, 12525000 1220 
js 54°58’ 47°17 61°39’ 60°37’ 43°53’ 42°24’ 
[hs 36°56’ 43°31’ 29° 6’ 44° 7 502527 55°39’ 
/ 79°45’ 83°14’ 96° 4 60°24’ 106°3’ 68920’ 
moment s.| 0.80 KR | 0:13 KR | 0.87KR | 0.12KR | 0.63 KR | 0.56 KR 
moment 4! 057 „ 0.68 , OSL 0.49 „ 072 O4 ten 
„ 
moment v. | 0.18 , O2 —0.11 „ 0.49 , |—0.28 , 0.37 
If we call the moment for the total couple A R, we can with 
the help of the place of the axis separate this couple into three 
different couples, which move the eye respectively round a sagittal, 
a transversal and a vertical axis, and calculate the moments of these. 
The moment for the sagittal axis (moments) is A R cos u, for the 
transversal axis (moment?) is A Rcos% and for the vertical axis 
(moment») is A Reosr. The result of the calculations is likewise 
indicated in the table above; the negative values with moment » 
indicate an adducing moment. 
Consequently we see, notwithstanding important individual oscil- 
lations, that the m. obliquus superior serves in the very first place 
for the rotation of the eye inwardly (moments) or, what means the 
same, to compensate rotating moments outwardly, that however for 
