H —81

Table 6. —Average Physical Measurements by Age, showing Rate of Increase: Boys.

Table 6a. —Average Physical Measurements by Age, showing Rate of Increase: Girls.

Height and Weight according to Rural, Small Towns, or City Areas. Children were divided into groups: (1) Children attending schools below Grade IV —that is, those living in rural areas ; (2) children attending schools of intermediate grades—that is, those living in country towns ; (3) city children. Children of the first group (those of the rural areas) show a definite superiority in the average for both height and weight over children in country towns or large cities. This finding is in accordance with that of various authorities in England, America, and Australia.

Compare with results of " Preliminary Study of Standards of Growth in the Detroit Public Schools," Packer and Moehlenan, Detroit Educational Bulletin, June, 1921, in which it is deduced that boys grow faster than girls up to 10* years, and girls faster than boys from 10i years to 15 years.

60

| I j| ! t Nearest „ . . , Yearly . Yearly Pe f r « ent^ e Sitting | Rentage Age. I Hel § ht " ! Increase. ° f Yearl y Weight. : Incre J e of Yearly f to Standing Chest. ° | Increase. j Increase. | & Height. In. In. ! lb. lb. In. In. 10J 53-85 .. ! .. 69-2 .. .. .. .. 25-0 11 54-7 1-65 3-0 71-8 4-5 6-3 28-3 51-8 25-25 11-|- 55-5 1-4 2-5 73-7 4-7 6-4 28-5 51-5 25-6 12 56-1 1-4 2-5 76-5 6-0 7-8 28-7 51-2 25-9 12f 56-9 1-7 3-0 79-7 7-5 9-4 29-0 51-0 26-2 13 57-8 1-9 3-3 84-0 8'0 9-5 29-4 50-8 26-5 131 58-8 2-0 3-4 87-7 8-3 9-4 29-7 50-5 27-2 14 59-8 1-95 3-2 92-3 9-3 10-1 30-2 50-5 27-8 14| 60-75 .. .. 97-0 .. .. 30-7 50-3 28-4 I ! i il

I I ! l i II I xt 4. v i Percentage I Ar , j Percentage 1 o ,,. Percentage JNearest u • , , Yearly £ A7 - nr • ,, Yearly v , e bitting , c . Age. Hei S ht - Increase. 1 f Year 'y Wel S ht " Increase. °J Yearl y Height. Standing Chest. B Increase. Increase. s Height. In. In. lb. lb. In. In. 10$ 53-45 .. .. 67-3 .. .. 27-7 51-9 23-95 11 54-4 2-05 3-8 71-0 7-3 10-3 28-0 51-5 24-3 11$ 55-5 2-25 4-0 74-3 8-2 11-0 28-5 51-45 24-8 12" 56-65 2-6 4-75 79-2 10-3 13-0 29-2 51-5 25-2 12-i 5 8 .i 2-45 4-2 84-6 10-0 11-8 29-8 51-3 25-7 13 59-1 1-7 2-85 90-2 9-9 10-9 30-3 51-3 26-1 13$ 59-8 1-45 2-4 94-5 9-6 10-15 30-7 51-4 26-5 14 60-55 1-5 2-45 99-8 9-9 9-9 31-0 51-5 27-0 145 61-3 .. .. 104-4 .. .. 31-2 51-0 27-3 ! 1