38 



American Statistical Association. 



In 1879 the average and mean measurements of 1262 stu- 

 dents, attending between 1861 and 1878, were contrasted in 

 respect to six items. The contrasts are here shown. The 

 average age was 21 years and three months. 



Mean. Average. 



Weight in pounds, 127 139 



Height in inches, 67 66 



Chest girth in inches, 36 36 



Arm " - " 11 12 



Lung capacity in cuhic inches, 220 250 



Pull up, number of times 12 11 



26,060 measures of 1321 students of the six items below 

 gave strength to the belief that the body gains its physical 

 perfection between 26 and 30 years of age. 



It is generally accepted as a law that bodily growth con- 

 tinues until the age of 30. This law, however, is not verified 

 by these statistics when studied by the single years of obser- 

 vation, owing probably to an insufficient number of data, and 

 specially above the age of 24. But on grouping the years 

 thus: All under 20; all from 20 to 24, inclusive; and all 

 from 25 to 29, inclusive, there is a very close illustration of 

 the general law, as is seen by this table. 



See Table B on page 39. 



After 20 years of gathering and recording anthropometric 

 statistics of our students several tables were compiled relat- 

 ing to physical measures, growth and development, the sick 

 list, and the maladies. These are here inserted. 



See Table C on page 40. 



