SOME CURRENT THEORIES 



447 



Grams 



is.ooo 



10,000 



S.ooo 



4,000 



3,000 



2,000 



1,000 



1 2345678910 

 Months (birth) 



Years after birth 



Fig. 199. — Cur\'e of human growth for the embryonic period and the first four 

 years after birth, drawn from the absolute increments of weight in Tabic XIII: each 

 vertical inter\-al indicated on the axis of ordinates represents an absolute increase of 

 weight of 1,000 grams; on the axis of abscissae the ten short intervals at the left re|)re- 

 sent the nine months of the embryonic period and the month of birth, and each of 

 the following intervals represents one year. 



