THE TABLES: EXPLANATORY 7 



CIRCUMFERENCE OF THE CHEST. The circumference 

 of the chest should be measured by a tape measure in 

 direct contact with the skin (or, if necessary, placed 

 over a very thin garment) . The measurement is taken at 

 the nipple-level in males, that is to say at the level of 

 the fourth intercostal space in the nipple line; in the case 

 of females the measure is taken at the same level, just 

 under the breasts. If the measurement in the case of 

 females is taken at the same level over the breasts, it is 

 found to be on the average 4| per cent, greater than if 

 taken below the breasts. It is therefore necessary to sub- 

 tract 4| per cent, from the chest-measurement taken in 

 this way, or, as an alternative method, multiply the ob- 

 served measurement by 0957, before looking up the 

 corresponding weight in the Tables. 



EXAMPLE Metric System 



Measurement over the breasts = 76.3 cm. 



76'3 cm. X 0-957 = 73 - cm. (corrected circumference of chest). 



From Table VIII. 

 73-0 cm. = 53-79 kilos. 



EXAMPLE American Standard System 

 Measurement over the breasts = 30 in. 



30 in. X 957 = 28'71 in. = 28f in. (corrected circumference of 



chest). 



From Table XX. 



28f in. = 118.72 Ib. = 118 Ib. 12 oz. 

 While being measured the subject should stand up 

 with the arms hanging loosely at the sides, and should 

 be encouraged to talk; in this way quiet natural breath- 

 ing is secured, and expansion of the chest beyond the 

 resting position is prevented. The measurement required 

 is that of the normally breathing, not expanded chest. 



