The first line in each group in Table F indicates the sum of ail the measurements of growth included in the 

 group. The second line indicates the number of measurements. The third line indicates the total growth cor- 

 rected for age and longevity according to Table E. The average growth, corrected or uncorrected, is obtained by 

 dividing the figures in the first or third lines, respectively, by those in the second line. 



