200 



Trans. Acad. Sci. of St. Louis. 



BOSTON PUBLIC SCHOOLS. 



Table XIL 



Column " C 



99,934 -r- 6,466 = 15.5 years. 



AVERAGE AGE OF WITHDRAWAL. 



Table XIII. 



St. Louis. 



Column " A " 13.1 Years. 



«< njjn 13.3 " 



n <<C" 13.5 " 



Average... 13.3 Years. 



Chicago. 



Column " A " l*-4 Years. 



II «<B" 14.5 " 



«< "C" 14^-7 " 



Average 14-5 Years. 



Boston. 



Column "A" 16.2 Years. 



<i «'B" 15.9 " 



<< "C" 15'5 " 



Average 15.9 Years. 



Issued May 21, 1896. 



