128 



GARY N. CALKINS 



Actual numbers of divisions in ten-day periods in all lit 



H, and I 



of series A, C, D, F, 



A series. 



C series. 



D series. 



F series. 



H series. 



I series. 



AVERAGE 

 DIVISION 



RATE 

 PER LINE 

 :N 10 DAYS 



5.86 



10.90 



12.83 



k3.16 



15.26 



17.16 



