CONTENTS 



Chap, Page 



List of Illustrations ----- xi 



Notes ------- xii 



I A chapter for the layman - - - - i 



II Also for the layman : How to use the commer- 

 cial growth-substances - - - - lo 



III The scope of this book - - - - 19 

 Further reading ----- 23 



IV Introductory scientific work on effects of the 



synthetic growth-substances 



Introduction ; the oat-coleoptile test ; epinasty - 24 

 Growth-promotion and growth-regulation: a 



distinction ---___ 25 



Description of methods of application - - 27 



Initiation of roots ----- 29 



Practical methods of using the substances - 30 



Uptake from soil - - - - - 33 



References A- - - - - - 34 



References B- - - - - -35 



V Recent work with cuttings 



Applications : 



Ordinary woody cuttings - * - 37 



Forest trees ------ 40 



Sub-tropical species - - - - 40 



Non-woody plants - - - - 42 



Substances : 



Solvents ------ 42 



Additions or reinforcements to solutions 43 



Other substances ----- 43 



vii 



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