EXAMPLES 111 



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

 capacity calculated from length of trunk and circumference of 

 chest). 



Subtracting the 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 



. I Length of trunk = 72-6 centimetres 



9 j Circumference of chest = 67-5 centimetres 



I 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 H- 2 = 33-1 kilos = weight cal- 

 culated. 



Subtracting calculated from observed weight, 

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

 -0-6 x 100-*- 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). 

 Subtracting calculated from observed vital capacity, 

 2140 - 2194 = -54 c.c. 

 -54 x 100 -H 2194 = -2-46%. 



Therefore the person has 2-46% too little vital capacity for 

 Class C by weight. 



Vital capacity from length of trunk = 2213 c.c. (Class C). 

 Vital capacity from circumference of chest = 2227 c.c. 



(Class C). 



Averaging 2213 + 2227 -*- 2 = 2220 c.c. (Class C) = (vital 

 capacity calculated from length of trunk and circumference of 

 chest). 



