PRESIDENT’S ADDRESS. 551 
Height, Standing and Sitting, in Inches. 
Height. Proportion to Total Height. 
Age 
. s 44s Of Head and Lower 
pening: ene Trunk. Extremities. 
Years. Inches. Inches. Per cent. Per cent. 
54 44°5 24°3 54°6 45:4 
6 45-0 24°5 54°4 45°6 
64 45°5 24°8 54°5 45°5 
a 46°5 2073 54°4 45°6 
73 47°4 25°8 54°4 45°6 
8 48:2 26°1 54°1 45°9 
84 48°9 26:7 54°6 45°4 
9 49°8 26°8 53°8 46°2 
93 50°7 27-0 53:2 46°8 
10 51°6 2723 52°9 47°1 
103 5250 27°8 52°9 47°1 
11 53°6 28°5 58°2 46°8 
113 54°6 28°9 52°9 47°1 
12 55°6 29°1 5223 47°7 
123 56°4 29°4 52e 47°9 
13 Gyo 29°8 ent 47°9 
133 57°9 30°4 SO) 47°5 
14 59°1 30°8 aa: 47°9 
143 60°6 3123 51°6 48°4 
15 61:9 31°9 51-5 48°5 
153 63°1 32°4 DLS 48°7 
16 64°3 32°9 51:2 48°8 
164 65:1 33°5 51°2 48°8 
If the figures be transferred to a diagram, it will be 
seen that the height does not increase in regular mathemati- 
cal progression, but in a series of undulations, the points 
of retardation in growth being at 64, 84, and 134 years. 
In the first two periods, the retardation is slight, but from 
the 12th to the 14th year there is a considerable check to 
the growth as compared with the years immediately 
previous and immediately following. This corresponds 
with the observations that have been made in England 
and elsewhere. During the period of 114 years covered by 
the table, the average growth is between eight-tenths and 
nine-tenths of an inch in six months, varying between one- 
half an inch in the earlier periods and one and a half 
inches at about 14 years. 
Dividing the height between the lower extremities and 
the trunk and head, it is found that the two parts grow 
proportionately up to 8 years and 6 months, after which 
the length of the lower extremities increases more rapidly 
than does that of the trunk. 
