EXAMPLES 115 



Subtracting calculated from observed vital capacity, 

 4200-4091 - + 109c.c. 

 + 109 x 100 -H 4091 = : +2-66%. 



Therefore the person has 2-66% too great vital capacity for 

 Class A by length of trunk and circumference of chest. 



Example 10 



FEMALE, AGE 20 YEARS 



f Weight of body = 51-7 kilograms 



Observations -\ Length of trunk = 86-9 centimetres 



I Circumference of chest = 68-0 centimetres 



CALCULATION 



Weight from length of trunk = 60-4 kilos. 



Weight from circumference of chest = 41-9 kilos. 



Averaging 60-4 + 41-9 -+- 2 = 51-2 kilos, which is the normal 

 weight corresponding to the observed length of trunk and 

 circumference of chest. 



Subtracting calculated from observed weight, 

 51-7 -51-2- + 0-5 kilos. 

 + 0-5 x 100 -* 51-2 - + 0-98%. 



Therefore the person weighs about 1% more than she should 

 according to the Tables. 



