girls is found during each of the four half-years, as is shown 

 in Table 1 below. 



AGE 



Ages are stated in years and months, a fraction of a month 

 being counted as a full month. For example, a child of age 

 14 years and 2 days at the time of examination, was put into 

 the age-group 14 and 1 month. There were thus 24 age- 

 groups of 1 month each, starting at age 14 years and 1 month, 

 and ending at age 15 years and 12 months. These were re- 

 arranged into quarter, half and full year age-groups. 



The children were distributed by half-year age-periods as 



follows : 



TABLE 1 



Number and Percentage of New York Boys and Girls, Ages 

 14 to 16, Granted Employment Certificates 



Classified by Half-year Age-periods 



The first half-year period contains the largest proportion 

 of children. Each of the succeeding half-years shows a regu- 

 larly diminishing number. It is perhaps noteworthy that the 

 excess at the first age- period is more marked in boys than in 

 girls, 37.1% of all the former being in the first half-year, as 

 against 34.9% of the latter. In the second half-year the pro- 

 portion of boys and of girls is about equal, 26.0% of the for- 

 mer and 25.9% of the latter. In the third and fourth half- 

 years the ratio of girls to the total of their sex is higher than the 

 corresponding figure for boys, compensating, of course, for the 

 reverse relationship obtaining during the first year. Age 15 

 to 15J includes 23.4% of the boys and 24.5% of the girls, and 

 age 15J to 16 embraces 13.4% of the boys and 14.7% of the 

 girls. 



GRADE 



Table 2 gives the distribution of the boys and girls by 

 school grade for the two-year period. 



3 



