BEACHIAL PLEXUS OF NERVES IN MAN 293 



62.06 per cent of the plexuses from the right side of the body are 

 in group 1, table 9, and 63.63 per cent of the left plexuses are in 

 this group, table 10, a difference of but 1.57 P^i" cent in favor 

 of the left side. 



Of the 110 plexuses in this group, 56 are from white and 54 

 from colored subjects, or 50.90 and 49.09 per cent of the group 

 respectively, a nearly equal distribution, table 2. But 65.88 

 per cent of the 85 plexuses from white bodies, and 59.99 per cent 

 of the 90 plexuses from colored bodies are found in group 1 . That 

 is, 5.89 per cent more of the plexuses from white than of the 

 plexuses from colored bodies fall in this group. 



Forty-one of the 65 white male plexuses or 63.07 per cent 

 of them are in group 1, and 15 of the 20 white female plexuses 

 or 75 per cent of them are in this group, a difference of 11.93 

 per cent in favor of the white female. 



Twent^^-nine of the 49 plexuses from colored males are in group 

 1, or 59.18 per cent, and 25 of the 41 plexuses from colored fe- 

 males are in this group, or 60.97 of them. This gives a difference 

 in favor of the colored females of but 1.79 per cent. 



Group two. 



From table 3, which shows the distribution of the plexuses 

 from group 2, it will be seen that of the 52 plexuses in the group, 

 35 are from male and 17 from female bodies, that is, 67.30 per 

 cent from males and 32.69 per cent from females, or more than 

 two to one. Of the total of 114 plexuses from males, 35 fall in 

 group 2 or 30.70 per cent, and of the 61 from females, 17 are in 

 group 2, or 27.86 per cent which shows less than 3 per cent of 

 difference in favor of the males. 



Of the 52 plexuses in group 2, 18 are from white males and 

 17 are from colored males, or 34.61 per cent from whites and 32.69 

 from colored, table 2. There is a total of 65 plexuses from white 

 males and 18 of them or 27.69 per cent are in group 2. Of the 

 49 plexuses from colored males, 17 are in this group or 34.69 per 

 cent a difference in favor of the colored males of 7 per cent. 



Nineteen of the 52 plexuses in group 2 are from the right side 

 of males and 16 from the left side, or 36.53 per cent right and 



