120 EXAMPLES 



Therefore the person has 4-35% too little vital capacity for 

 Class A by weight. 



Vital capacity from length of trunk = 2973 c.c. (Class A). 



Vital capacity from circumference of chest = 2968 c.c. 

 (Class A). 



Averaging 2973 + 2968 -5- 2 = 2971 c.c. (Class A) = (vital 

 capacity calculated from length of trunk and circumference 

 of chest). 



Subtracting calculated from observed vital capacity, 

 2880 - 2971 = -91 c.c. 

 -91 X 100 -f- 2971 = - 3-06%. 



Therefore the person has 3-06% too little vital capacity for 

 Class A by length of trunk and circumference of chest. 



Example 13 



FEMALE, AGE 20 YEARS 



Weight of body = 115 Ib. 12 oz. 



Length of trunk = 33 inches 



Observations ~. , , , ~ 01 / . , 



Circumference ot chest = 28>i inches 



Vital capacity = 3100 c.c. 



CALCULATION 



Weight from length of trunk = 118-64 Ib. 

 Weight from circumference of chest = 115 - 12 Ib. 

 Averaging 118-64 + 115-12 -=- 2 = 116-88 Ib. = weight cal- 

 culated. 



Subtracting calculated from observed weight, 

 115-75 - 116-88 = -1-13 Ib. 

 -1-13 X 100 -i- 116-88 = -0-97%. 



Therefore the person is 0-97% too light. 



Vital capacity from weight = 3155 c.c. (Class A) = 

 (vital capacity calculated from weight). 



Subtracting calculated from observed vital capacity, 

 3100 - 3155 = -55 c.c. 

 -55 X 100 -f- 3155 = -1-74%. 



