296 ABRAM T. KERR 



colored females is 41, the 2 in group 3 form 4.87 per cent, while 

 the 2 from white females form 10 per cent of the total of 20 from 

 white females that are in group 3. 



Among the females of the group the plexuses are also distributed 

 equally on the right and left sides, 2 on each. Of the 30 plexuses 

 from the left side of the females, 2 or 6.66 per cent are in group 

 3 and 2 of the 31 or 6.45 per cent are from the right side, which 

 makes the percentage nearly the same on both sides. 



Five of the thirteen plexuses of group 3 are on the right and 

 8 on the left side, that is, 38.46 per cent on the right and 61.53 

 per cent on the left, a difference of 23.07 per cent in favor of the 

 left side. Five of the 87 right plexuses that were studied or 5.74 

 per cent and 8 of the 88 left plexuses or 9.09 per cent are in group 

 3, a difference of 3.35 per cent in favor of the left. 



Eight or 61.53 per cent of this group are from white and 5 or 

 38.46 per cent are from colored subjects. Compared with the 

 total number of records from white and colored, 85 white and 

 90 colored, tables 7 and 8, we see that 9.41 per cent of the 

 plexuses from white and 5.55 per cent of the plexuses from 

 colored subjects are in group 3, or 3.86 percent more white than 

 colored. 



There are three times as many plexuses from white males as 

 from white females, in this group. The 6 plexuses in this group 

 from white males constitute 9.23 per cent of the total of 65 plexuses 

 from white males while the two plexuses from white females form 

 10 per cent of the 20 plexuses from white females. 



There are 3 plexuses in this group from colored male to 2 from 

 colored female subjects. Of the total of 49 plexuses from col- 

 ored males, 3 or 6.12 per cent are in group 3 while of the total 

 of 41 from colored females, 2 or 4.87 per cent are in this group, 

 a difference of only 1.25 per cent. 



INFLUENCE OF SEX, COLOR, AND SIDE OF THE BODY UPON THE 



PLEXUSES 



The above comparisons of the frequency of occurrence of each 

 group of plexuses among white and colored, male and female, 

 and upon the right and left sides of the body have been made in 



