Trans. Acad. Sci. of St. Louis. 
Cm. 
186 
lis 
170 
; LZ 
162 : | saat Pa 
bs | B 
154 | ba haa ae at 
seer at 
146 al Ree Bee aa a 
ed & Re ae es 
138 Fal oat | [a= oe os 
180 4 ee wae Po = 
tt fe edi Pe asl ie 
122 —T aa eae a PA 
| er = oe ae Fee 
Le 
114 Eé awa | a 
et ee Ben ee ey 
106 Lb ie en ae co a 
L 
ra 
6 )}— 
10 20 30 70 80 90 
Percentile Grades. 
VoL. VI. No, 12. PLATE XI (from Table No. 20; pages 311, 315). 
Boys’ Span of Arms. 
