(14) 
TABLE VI 
Experiment of 11/XII 1900. 
6 9, 
A 54 10° 163.9 135.0 
Ist curves 
B 08 —6.7 —7.9 
10. 
A 10° 191.0 
IInd curves x 
B 510 —19.6 
8. 
A X 10° | 130.4 
BX 10 | —9.9 
Illrd curves 
It appears from these values in connection with the time-notation, 
that if the interval of time between two successive distention- 
curves is shorter than three minutes, the constant B in a succeeding 
curve is considerably greater. With B the value of A increases. 
Among the values mentioned there are three cases, viz. Table V 
curves 15 and 17, Table VI curves 7 and 8, and curves 22 and 
23, for which nearly identical constants are found, and in these 
three cases the interval between two successive curves was always 
longer than five minutes. In further experiments I hope to return 
to this last phenomenon, which if generally correct, seems very 
important to me. 
If the conception of a muscle-reflex arc is correct and if it is also 
true, that B represents the coefficient added to the term, which is 
the analytical expression of the influence of the afferent part of this 
muscle-reflex arc on the shape of the distention-curve, then the 
increment of B caused by a shortly preceding distention, is only a 
special case of the physiological rule, which is generally less accurately 
formulated as follows: “shortly after every stimulation the nerve is 
more irritable.’ But then the increase of the coefficient A together 
with the increase of B is not accidental. From the two subjoined 
tables : 
