Vlll PREFACE 



the Henry A. Dreer greenhouses at Riverton, N. J. ; to 

 Mr. L. F. Reese and Mr. H. M. Hills, also members of 

 the staff, for many helpful suggestions as to outdoor and 

 indoor propagation respectively ; to the A. T. de la Mare 

 Company of New York for the set of pictures detailing 

 hyacinth propagation ; and to the United States Depart- 

 ment of Agriculture and to experiment stations and 

 propagating establishments which supplied the illustra- 

 tions noted in the list of acknowledgments printed else- 

 where. 



The author has had too long an experience in writing 

 and editing books and articles to suppose that this volume 

 is perfect. He therefore earnestly requests that readers 

 who note any least error of statement or typography will 

 kindly notify him or the publishers so corrections may 

 be made in subsequent editions. In the hope, however, 

 that such erfors are few and that the volume will meet 

 a long-felt need the author confidently commends it to 

 plant propagators and students of plant propagation. 



M. G. KAINS. 

 State College, Pa., March 1, 1916. 



