122 EXAMPLES 



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

 (Class B). 



Averaging 2328 + 2346 -f- 2 = 2337 c.c. (Class B) = (vital 

 capacity calculated from length of trunk and circumference 

 of chest). 



Subtracting calculated from observed vital capacity, 

 2390 - 2337 = +53 c.c. 

 +53 X 100 -f- 2337 = +2-27%. 



Therefore the person has 2-27% too great vital capacity for 

 Class B by length of trunk and circumference of chest. 



Example 15 



MALE, AGE 13 YEARS 



Weight of body = 71 Ib. 10 oz. 



Length of trunk = 28% inches 



Observations . , r , o5/ i, 



Circumference of chest = 26?& inches 



Vital capacity = 2140 c.c. 



CALCULATION 



Weight from length of trunk = 72'88 Ib. 

 Weight from circumference of chest = 73 55 Ib. 

 Averaging 72-88 + 73-55 -5- 2 = 73-22 Ib. - weight calcu- 

 lated. 



Subtracting calculated from observed weight, 

 71-63 - 73-22 = -l-591b. 

 -1-59 X 100 -H 7322 = -2-17%. 



Therefore the person is 2-17% too light. 



Vital capacity from weight = 2193 c.c. (Class C) = (vital 

 capacity calculated from weight). 



Subtracting calculated from observed vital capacity, 

 2140 - 2193 = -53 c.c. 



-53 X 100 -5- 2193 = 2-42%. 



Therefore the person has 2-42% too little vital capacity for 

 Class C by weight. 



Vital capacity from length of trunk = 2221 c.c. (Class C.) 



