vi PREFACE 



Miss Caro Miller, Supervisor of School Gardens, Phila- 

 delphia Schools, has given numerous suggestions incorporated 

 throughout the book. Similar suggestions covering the entire 

 book have been given by S. B. McCready, Director Elementary 

 Agricultural Education, Ontario Agricultural College, Guelph, 

 Canada, and by E. E. Balcomb, Professor of Eural and Agri- 

 cultural Education, State Normal, Greensboro, N. C. 



Helpful suggestions on their respective chapters were 

 given as follovfs: 



T. C. Johnson, Director Virginia Truck Station, chapters 

 on Plant Growth, and those relating to Insects, Diseases and 

 Spraying. 



W. S. Taylor, Professor of Rural Education, University 

 of Texas, chapters relating to Cuttage, Grafting, Budding, 

 Layering, and also the Soil and its Improvement. 



E. H. Scott, Department of Agriculture, Georgia Normal 

 University, chapters dealing with Plants in Eelation to Soil, 

 Light and Air, and the Southern Garden Calendar. 



J. L. Randall, Garden Specialist, U. S. Bureau of Edu- 

 cation, Southern Garden Calendar. 



George I. Christie, Corn Specialist and Director, Indiana 

 Station, chapter on Corn. 



R. L. Watts, Dean Pennsylvania State College, the Garden 

 Calendar for Northern States. 



John W. Lloyd, Professor of Vegetable Gardening, Uni- 

 versity of Illinois, the matter relating to the growing of 

 vegetables. 



Albert Dickens, Professor of Horticulture, Kansas Agri- 

 cultural College, the chapters on Irrigation and Drainage and 

 Experiments with Soils. 



A number of the drawings are by Mrs. Kary C. Davis, 

 and she has aided in the gathering of materials, reading manu- 

 script and proof. 



