‘PRESIDENT’S ADDRESS. 563 
for each age observed are as given in the accompanying 
table. ‘Lhe lung-expansion is the mean of three observations 
for each child. 
Chest and Lung Capacity. 
Chest Circumference. « Lung Expansion. 
Age. 
Males. Females. Males. Females. 
Years. Inches. Inohes. Cub. C’metres.) Cub. C’metres. 
2 21-0 21-6 620 820 
6 219 23°) 690 | 840 
64 S17. DD 730 900 
7 21°9 23°0 760 990 
7 22°0 232 790 1050 
8 Q2°4 23°5 800 1050 
84 22°9 23°5 860 1050 
9 2am 23°5 990 1070 
94 oe 23°5 1110 1160 
10 23°4 23°6 1180 | 1240 
103 23°8 23°38 1250 1290 
ila 24°3 24°2 1350 1370 
113 24°7 24°6 1440 1440 
12 25:1 Asa | 1540 | 1540 
123 PS a4. 26°8 1630 1630 
13 Sas 274 27°2 1720 1720 
133 26°0 28:°0 1800 1720 
14 26°5 28°2 1950 1720 
143 27-2 28°9 2140 1870 
15 27°8 29°6 2290 2000 
153 28°3 BOT, 2400 2090 
16 29-0 29°6 2550 2145 
1634 29°7 29°8 2680 2200 
Hanp-GRasp. 
The strength of hand-grasp was taken for all children. 
It is found that there is a rapid increase of power after 
the age of 134 years. This is, of course, a natural result 
following from the manual work and exercise undertaken by 
children after attaining the age stated. Hand-grasp, 
however, is not an important observation. It bears no 
relation to mental ability or even to general health and 
growth ; it depends very largely upon sociological condition ; 
and high registration of grasp is often associated with 
