Porter — The Growth of St. Louis Children. 295 
‘‘ osophical value of statistical results depends on a due 
‘sappreciation of this distinction and acceptance of its 
‘* consequences.’’ 
Other statisticians have used the average exclusively. Out 
of respect to this difference of opinion, both the median value 
and the average have been employed in the present work. 
On calculating these values for each series, it was found that 
the difference between them was inconsiderable, showing that 
