Trans. Acad. Sci. of St. Louis. 
No. 
of 
Indiv 
300 a 
yee 
a —oooo 
‘ os 
270 i rd a 
if \ 
i] i 
240 / 
ta 
~~ 
pF 
150 
AN 
120 
7, 
| 
| 
Hea 
g wae, Bao we X 
2d 3d 4d 
0 d 
Plus. PROBABLE DEVIATION. Minus. 
Vou. VI. No. 12. PLATE I (from Table No.7; page 286) 
The calculated and the begiok ne distribution of the pas standing of 2192 
uis School Girls, aged § 
Inbro ine: Broken Line: 
Distribution according Distribution according 
to theory. to observation. 
