CURRENT OF INJURY AND NEGATIVE VARIATION 155 



TABLE SHOWING PERMANENT GALVANOMETRIC NEGATIVITY AT 

 DIFFERENT DISTANCES FROM POINT OF INJURY. 



In fig. 109 we have a curve which illustrates these results, 

 and explains why the maximum negativity is at the zone 

 of section, diminishing rapidly as we recede from it. It is 

 obvious that if these sections had been made to the right as 



FIG. 109. 



Curve showing the Electrical Distribution in Stem with 

 one Sectioned End 



Ordinate represents galvanometric negativity ; abscissa, the distance 

 from sectioned end. 



well as to the left of A, the result would have been a duplicate 

 series of changes of galvanometric negativity in reference 

 to A, on that side also. Such a series is represented in 

 fig. no, by means of dotted lines. It will also be seen from 

 this figure that the greatest electro-motive difference exists 



