EXAMPLES 113 



Subtracting calculated from observed vital capacity, 

 2390 - 2330 = +60 c.c. 

 +60 X 100 -=- 2330 = +2-58%. 



Therefore the person has 2-58% too great vital capacity for 

 Class B by weight. 



Vital capacity from length of trunk = 2336 c.c. (Class B). 



Vital capacity from circumference of chest = 2346 c.c. 

 (Class B). 



Averaging 2336 + 2346 + 2 = 2341 c.c. (Class B) = (vital 

 capacity claculated from length of trunk and circumference of 

 chest) . 



Subtracting calculated from observed vital capacity, 

 2390 - 2341 = +49 c.c. 

 +49 X 100 *- 2341 = +2-09%. 



Therefore the person has 2-09% too great vital capacity for 

 Class B by length of trunk and circumference of chest. 



Example 5 



MALE, AGE 13 YEARS 



Weight of body = 32 5 kilograms 



Length of trunk = 72-6 centimetres 



Observations ~. . , , _ _ ,. 



Circumference of chest = 67-5 centimetres 



Vital capacity = 2140 cubic centimetres 



CALCULATION 



Weight from length of trunk = 32-91 kilos. 

 Weight from circumference of chest = 33-20 kilos. 



Averaging 32-91 + 33-20 -5- 2 = 33 1 kilos = weight calcu- 

 lated. 



Subtracting calculated from observed weight, 

 32-5 - 33-1 = -0-6 kilos. 

 -0-6X100-7-33-1= -1-81%. 



Therefore the person is 1"81% too light. 



Vital capacity from weight = 2194 c.c. (Class C) = (vital 

 capacity calculated from weight). 



