238 Trans. Acad. Set. of St. Louis. 
to age during the remaining years. They state further that 
the amount of the Probable Deviation from age 11 on is greater 
in girls than in boys, meaning of course that this is true 
within the limits of their own observations. A wider experi- 
ence shows that the Absolute Probable Deviation in height 
standing of girls ceases to be greater than that of boys at age 
14 (nearest birthday). Finally, it does not appear from the 
context that the statement ‘* Da aber beobachtet worden ist, 
** dass die Madchen circa zwei Jahren vor Eintritt der Puber- 
** titsperiode verhiltnissmassig rascher wachsen, so diirfte die 
‘« Verschiedenheit, mit welcher der Eintritt dieser Zeit erfolgt, 
‘wohl ein Grund mit sein fiir die grésseren Schwankungen ”’ 
includes the conception of the relation of the Probable 
Deviation to the quickness of growth (to be demonstrated 
below), as distinct from the absolute difference in size of 
boys and girls at this period. 
Before applying to the present material the ideas which the 
foregoing paragraphs have attempted to state with some preci- 
sion, it will be interesting to compare the Probable Deviation 
of Height Standing of German children in the Freiberg district 
with that of the St. Louis children. 
TABLE No. 1. 
A Comparison of the Absolute Probable Deviation from the Average Height 
Standing of School Children in the Freiberg School District (Geissler & 
Uhlitzsch) and in the St. Louis Public Schools. 
St. Louis Boys. anes: 
Ne a a Secreto Seen ee ee FREIBERG 
Birthday. | St. Louis. | Freiberg. | St. Louis. | Freiberg. mae 
ce cs po Ee 
6 3.40 cm. | 3.4488 cm. | 3.42 em. | 3.5926 cm. | 6hto 7 yrs. 
‘g 8.61 4 3.5841 &% 3.75.“ 3.7362 ** ee ee 
8 fog 2.8546 « 3.70. 3.8298 * |8 - 9 * 
9 8.75 ** | 4.0067 “« 3.83 “ 3.7786 19 -— 10 
10 3.98 ° 1 4oist “+ £06 {age65 © lio - 11 * 
= 428 “ | 4.2434 « | £48 © | 4ai95 “ [11-12 « 
12 4.47 «& 4.5984 5.23 «6 £5018 119 = “ 
13 4.98 6 “ 5.46 6 5.2155. * 18 - 14 * 
14 5.58 “ | 5.1479 “ | 5.15 * | 4.8520 ‘| over 14 * 
15 6.83. 4.01 # 
16 5.87 “ 4.05 sé 
e 5.15 « B45 
18 Pp ae 339 + 
19 4.0: 
ao. 3.14 
