OE THE GALVANIC CURRENT ON THE MOTOR NERVES OE MAN. 
985 
9. The diminution of 1 . ,, f the diminution of 
K.C.C. after K.D. } “ gr6ater th “ Ia.C.C. after A.D. 
10. The diminution of 1 . , f the diminution of 
A.O.C. after K.D. } 18 greater ^ Ik.O.C. after A.D. 
11. The increase of 1 . ,, f the increase of 
A.O.C. after A.D. } 18 greater Ik.O.C. after K.D. 
12. The increase of 1 . . f the increase of 
K.C.C. after A.D. } 18 greater than U.C.C. after K.D. 
That is to say : the after-katkodic diminution and the after-anodic increase are 
more marked in the polar than in the jperipolar region. 
These statements, with the exception of 2 and 6 referring to the K.O.C., and 
consequently also of 10 and 11, are illustrated in Tracings 28-31. They refer to the 
immediate after-effects. 
We are not at present in a position to discuss the subsequent after-effects, which 
we reserve until we shall have investigated the course of electrotonic and post¬ 
electrotonic changes. We cannot, however, omit drawing attention to the peculiarity 
affecting the opening excitation, which constitutes an exception to the rule that the 
subsequent after-effect of polarisation of either sign is increased excitability. The 
subsequent after-effect of anodic polarization as tested by anodic break is apparently 
diminished excitability, yet by testing in the polar region by kathodic make, evidence 
of increased excitability is obtained when the effect of the original anodic break may 
be almost lost. To what specific difference in the excitatory process at make and at 
break this may point we cannot conjecture, and we have only to remark that the 
fact is of the same nature as the gradual diminution of successive anodic break 
contractions. 
6 K 2 
