94 OBSERVATIONS AND MEASUREMENTS ACADEMY MEMBERS [MemoI [vol N xxiui 



Table 67. — Foot index ' 



Members of the Academy 



Old Americans 



Not old Americans 



Old Americans 

 at large (labora- 

 tory series) 



Subjects 



Average 



Minimum 



Maximum 



Range of variation in percentage of the average 

 a 



cv 



92 



36. 12 ±0. 18 



31. 1 



40. 1 



U-92 



2. 72 ±0. 13 



7. 43 ±0.37 



49 



36. 06 ±0. 15 



32.8 



41. 8 



25.0 



1. 58±0. 11 



4. 38 ±0. 30 



245 



36.33 



30.7 



41. 1 



2S. 63 



DISTRIBUTION 



Old Americans (92) 



Not old Americans (49). 



31.1-32.49 



Percent 

 1. 1 



32.5-33.49 



Percent 

 4.3 

 2.0 



33.5-34.49 



Percent 



12.0 

 12.3 



34.5-35.49 



Percent 

 15.2 

 22. 5 



35.5-36.49 



Percent 



25.0 



26.5 



36.5-37.49 



Percent 



23.9 



28.6 



37.5-38.49 



Percent 



12.0 

 2.0 



38.5-39.49 



Percent 



3.3 



2.0 



39.5-40.49 



40.5-41.8 



Percent 



3.3 

 2.0 



Percent 

 2.0 



FOOT INDEX AND AQE 



Subjects to 60 years of age, inclusive 



Average 



a 



CV 



Over 60 years of age 



Average 



a 



CV 



Members of the Academy 



Old Americans 



55 

 36. 0±0. 15 

 1. 65±0. 11 

 4. 58 ±0. 29 



37 



36. 25 ±0. 18 



1. 69 ±0. 13 



4. 65 ±0.36 



Not old Americans 



22 



36. 18 ±0. 20 



1. 37±0. 14 



3. 79 ±0. 39 



27 



35. 95 ±0. 22 



1. 73±0. 16 



4. 81 ±0. 44 



Old Americans 

 at large (labora- 

 tory series) 



245 

 36.33 



' See the following equation: 

 Breadth X 100 , 

 Length 



