PRINCIPLES 



OF 



PLANT CULTURE 



AN ELEMENTARY TREATISE DESIGNED AS 

 A TEXT-BOOK FOR BEGINNERS IN AG- 

 RICULTURE AND HORTICULTURE 



BY 



E. S. GOFF 



LATE PROFESSOR OF HORTICULTURE, UNIVERSITY OF WISCONSIN 



SEVENTH REVISED EDITION 



UNIVERSITY CO-OPERATIVE CO. 



MADISON, WISCONSIN 

 19 12 



