The School Child 87 



under normal conditions. Growth in height is 

 so comparatively uniform for each individual 

 that the growth curve enables one to prophesy 

 with a high degree of accuracy how tall a young 

 child will be at subsequent years. Growth in 

 height is affected by the formation and removal 

 of adenoids. Prolonged disease history retards 

 normal growth in stature. * * * There is a 

 great probability that a tall boy or girl at six 

 years will be a tall boy or girl at twelve years 

 of age ; a tall boy or girl at nine or ten will be 

 tall at fifteen or sixteen years of age. * * * For 

 height boys have a greater variability than girls 

 at all ages between seven and seventeen, except 

 at twelve and seventeen ; at thirteen they are the 

 same. Boys fluctuate more in variability in 

 height than girls." 



The following are some of the conclusions 

 reached as to weight, — "There is more in- 

 dividual variation in growth in weight than in 

 growth in height. Pre-adolescent acceleration 

 in growth in weight precedes as a rule the pre- 

 adolescent acceleration in growth in height. 



