AUTHOR'S ACKNOWLEDGMENTS 



Acknowledgment is here made to the mxany farmers throughout Ontario 

 county who so courteously contributed the information on which the 

 study is based. Thanks and appreciation are most cordially extended 

 to Professors Craig and Wilson of the departments of Horticulture and 

 Pomology, Professors Snyder and McMahon of the Department of Mathe- 

 matics, Doctor Love, Professor H. W. Riley, and others, for the many 

 helpful suggestions they have given in regard to the work. All photo- 

 graphs were obtained through the courtesy of the Department of Horti- 

 culture. 



H. M. Martin 



165 



