124 EXAMPLES 



Vital capacity from circumfernece of chest = 2008 c.c. 



(Class B). 



Averaging 1870 + 2008 -f- 2 = 1939 c.c. (Class B) = (vital 

 capacity calculated from length of trunk and circumference of 

 chest). 



Subtracting calculated from observed vital capacity, 

 1960 - 1939 = +21 c.c. 

 +21 X 100 -f- 1939 = +1-08%. 



Therefore the person has 1-08% too great vital capacity for 

 Class B by length of trunk and circumference of chest. 



Example 17 



FEMALE, AGE 9 YEARS 



( Weight of body = 63 Ib. 1 oz. 



Observations j Length of trunk = 25% inches 



[ Circumference of chest = 23^ inches 



CALCULATION 



Weight from length of trunk = 54'54 Ib. 

 Weight from circumference of chest = 56-21 Ib. 

 Averaging 54-54 + 56-21 -f- 2 = 55-38 Ib. = weight calculated. 

 Subtracting calculated from observed weight, 



63-06 - 55 38 = +7-68 Ib. 



+ 7-68 X 100 -s- 55-38 = +13-87%. 

 Therefore the person is 13-87% too heavy. 



Example 18 



MALE, AGE 20 YEARS 



Weight of body = 131 Ib. 13 oz. 



. Length of trunk = 35}^ inches 



Circumference of chest = 33% inches 

 Vital capacity = 4700 c.c. 



CALCULATION 



Weight from length of trunk = 143-11 Ib. 

 Weight from circumference of chest = 142-27 Ib. 



