112 EXAMPLES 



Therefore the person is 1-13% 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 -J- 3155 = -1-74%. 



Therefore the person has 1-74% too little vital capacity for 

 Class A by weight. 



Vital capacity from length of trunk = 3210 c.c. 

 Vital capacity from circumference of chest = 3155 c.c. 

 Averaging 3210 + 3155 -=- 2 = 3183 c.c. = (vital capacity 

 calculated from length of trunk and circumference of chest). 

 Subtracting calculated from observed vital capacity, 

 3100 - 3183 = -83 c.c. 

 -83 X 100 -J- 3183 = -2-61% 



Therefore the person has 2-61% too little vital capacity for 

 Class A by length of trunk and circumference of chest. 



Example 4 



MALE, AGE 9 YEARS 



Weight of body = 32-2 kilograms 



Length of trunk =72-2 centimetres 



Observations ~. - r , a ~ ~ 



Circumference of chest = 67-0 centimetres 



Vital capacity = 2390 cubic centimetres 



CALCULATION 



Weight from length of trunk = 32-34 kilos. 

 Weight from circumference of chest = 32-52 kilos. 

 Averaging 32-34 + 32-52 -v- 2 = 32-4 kilos = weight calcu- 

 lated. 



Subtracting calculated from observed weight, 

 32-2 - 32-4 = -0-2 kilos. 

 -0-2 X 100 -5- 32-4 = -0-62%. 

 Therefore the person is 0-62% too light. 



Vital capacity from weight = 2330 c.c. (Class B) = (vital 

 capacity calculated from weight). 



