Hrdlicka. 



45 



stronger in the right hand. Left-handedness is apparently more a 

 nervous phenomenon than muscular. 



In the third place we notice an almost regular annual increase in 

 the force of the children. This is particularly the case in the white 

 male children, where the average annual increase in pressure force 

 amounts to about 4 pounds. The traction force increases only about 

 2 pounds annually, and the disproportion between the pressure and 

 traction forces of the child grows with the age of the individual. 



In the negroes, both the pressure and traction force were found 

 to exceed at all ages similar forces in the white children. This is 

 the more remarkable as we saw that the average weight of the 

 colored subject was at almost all ages less than that of the white 

 children in the asylum. The fact speaks for a greater proportionate 

 muscularity of the colored subjects; this condition was well appre- 

 ciable during the inspection of the children. 



Average Pressure Force in Right Hand of the Children, According to 

 the Color, Sexes and Ages. 



