ACKNOWLEDGMENTS. 



The author hereby acknowledges his obligation for aid, sug- 

 gestions and encouragement to Hon. A. P. Sandles, President of 

 the Ohio Agricultural Commission, Director Charles E. Thome 

 and the Station Staff of the Ohio Experiment Station, Dr. P. 

 G. Holden of Iowa, and Joseph E. Wing of Mechanicsburg, O. 



The author is especially indebted for assistance to Hon. 

 Frank W. Miller, State Supt. of Public Instruction in Ohio ; W. 

 A. McCurdy, State Supervisor of Rural Schools in Ohio, S. A. 

 Harbourt, J. R. Clarke, and L. S. Ivins who served with the 

 author as State Supervisors of Agricultural Education in Ohio, 

 from 1911 to 1915, and a host of County, District, and Village 

 Superintendents and teachers who have rendered splendid ser- 

 vice in bringing to Ohio the greatest Educational Epoch in its 

 history. 



Special credit is due J. Donald Goll for many valuable draw- 

 ings used in this book. 



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