2 <ato 0/0 A7 





o 



TO 

 MY STUDENTS 



WHO HAVE GIVEN ME VALUABLE ASSISTANCE 



IN THE SPIRIT OF FELLOW WORKERS 

 WITH WHOM MANY LESSONS HAVE BEEN LEARNED 



AND 



WITH WHOM MANY PLEASANT HOURS HAVE BEEN SPENT 



BOTH INSIDE AND OUTSIDE THE CLASS ROOM 



THIS BOOK IS DEDICATED 



379662 



