EXAMPLES 123 



Vital capacity from circumference of chest = 2235 c.c. 

 (Class C). 



Averaging 2221 + 2235 * 2 = 2228 c.c. (Class C) = (vital 

 capacity calculated from length of trunk and circumference 

 of chest). 



Subtracting calculated from observed vital capacity, 

 2140 - 2228 = -88 c.c. 

 -88 X 100 -f- 2228 = -3-95%. 



Therefore the person has 3-95% too little vital capacity for 

 Class C by length of trunk and circumference of chest. 



Example 16 



MALE, AGE 8 YEARS 



Weight of body = 56 Ib. 4 oz. 



Length of trunk = 25% inches 



Observations . f , , ,/ . 



Circumference of chest = 24^ inches 



Vital capacity = 1960 c.c. 



CALCULATION 



Weight from length of trunk = 52 30 Ib. 

 Weight from circumference of chest = 57-74 Ib. 

 Averaging 52 30 + 57-74 -4- 2 = 55-02 Ib. = weight calcu- 

 lated. 



Subtracting calculated from observed weight, 



56-25 - 5502 = +l-231b. 



+ 1-23 X 100 -i- 55-02 = +2 24%. 



Therefore the person is 2-24% too heavy. 



Vital capacity from weight = 1971 c.c. (Class B) = (vital 

 capacity calculated from weight). 



Subtracting calculated from observed vital capacity, 

 1960 - 1971 = -11 c.c. 

 -11 X 100 -h 1971 = - 0-56%. 



Therefore the person has 0'56% too little vital capacity for 

 Class B by weight. 



Vital capacity from length of trunk = 1870 c.c. (Class B). 



