300 Trans. Acad. Sci. of St. Louis. 
sated by adding the median minus average values of several 
dimensions of each sex and age, without regard to plus or 
minus sign. This has been done in Table No. 12. 
TABLE No. 12. 
SuMs OF MEDIAN MINUS AVERAGE VALUES. 
—s 
nm : . 
Sy jvcight, Height |Girth of Chest at| Strength of | Head and 
rR Sittin - tat Full Inspiration | Squeeze, Right | seasure- 
se plang and Expiration. | and Left Hand. aceite. 
at) 
Sn : 
| Boys. | Girls. | Boys. | Girls. | Boys. Girls. | Boys.| Girls. 
6 1.55 1.48 54 1.06 0.74 1.48 9.76 | 3.05 
7 1,22 1.89 0.54 0.79 0.06 0.57 2.67 | 2.86 
8 1.86 1.60 0.73 1.05 0.23 0.35 2.82 | 2.40 
9 1.62 1.16 86 1.04 0.89 0.27 2.24 | 3.31 
10 1.51 1.58 0.66 0.89 0.24 0.65 1.27 | 3.89 
ll 1.56 1.57 0.87 1.03 0.31 0.29 2.15 }-3.72 
12 0.71 1.92 0.81 0.31 0.43 0.12 1.99 | 3.10 
13 1.27 1.96 0.80 0.70 0.45 0.74 L.47 13.18 
14 1,21 3.37 0.31 0.91 1.00 0.93 3.87 | 3.26 
15 1.51 1.89 0.76 0.29 0.60 0.72 83.06 | 2.46 
16 3.52 2.34 1,36 0.73 1.68 0.26 2.26 | 3.43 
17 3.19 1.52 1.62 0.67 . 0.47 4.65 | 2.96 
18 pees 2.42 BRIT 0.93 : 0.77 3.40 | 3.29 
The conclusions drawn from the curves discussed above are 
substantiated in the main by this table. It is, however, dif- 
ficult to believe that a sexual difference such as exists in 
weight, height standing, height sitting and span of arms 
will not be found also in girth of chest and the various 
dimensions of the head. But a purely objective attitude 
towards the material in hand does not permit speculation as 
to what might be revealed if the material were very much 
larger and its intrinsic laws easier to unveil. 
