Trans. Acad. Sci. of St Louis. 
Age: 6 7 8 9 irae oe 4 a ne ¢ 
Mm. Fe: G. 
194 
mel 
Pt oncealne 
190 A me 
ue Be 4 50 
; a 
186 a a vl | . 
a] rae oe we 25 
ee haere Bs rer eetad 
182 - ail z ad 
ie a F a 
eee ESE seed —r 
ope = Si 
178 4 oe | 
7 = Lt 
174 — 
170 = — Pee 
VOL. VIL. Nook; 
Length of Head. 
PLATE XXXII (from Table No. 47; pages 325, 359). 
75,50 and 25 Percentile Grades. 
Boys: Unbroken Lines. 
Girls: Broken Lines. 
