Vlll PREFACE 



111 view of the existence of several excellent texts in plant 

 microtechnique, special methods for the preparation of macerated 

 tissue and permanent mounts, as well as the use of microchemical 

 reagents, receive only brief attention in this book. However, a 

 few notes on these topics which may prove valuable to both the 

 teacher and student in the use of this book are included under 

 the "Appendix." 



Since teaching methods vary, especially with respect to the 

 nature of the record which the student is required to make of 

 his laboratory work, each exercise contains a list of suggested 

 drawings and special topical reports. This, it is hoped, will per- 

 mit of selection on the part of the teacher in accordance with the 

 time and emphasis placed on a given topic. 



Whatever practical merits the present volume may possess are 



due to a large degree to the constructive criticisms of numerous 



students who used the book in its previous planographed form. 



The exercise on sieve-tube elements has been read and criticized 



by Dr. Katherine Esau and Dr. A. S. Crafts for whose assistance 



the author expresses his thanks. I am also grateful for the many 



helpful suggestions made by Dr. Ernest Ball who served as my 



laboratory assistant for the past three years. For all errors 



in fact or interpretation, however, the writer assumes full 



responsibility. a o xn 



A. o. F. 



Berkelcv, Talif. 

 Oct., 1941 



Special Acknowledgments 



Quotations from various texts are acknowledged as to pagina- 

 tion and autiior at appropriate points in this book. For special 

 ponnission to rei)i'o(luce these quotations, the author expresses his 

 thanks to the foUowiiig: Professor T. E. Kawlins and John Wiley 

 and Sons, for the quotation from Rawlins' Phytopathological and 

 Botanical Research MetJwds; University of Chicago Press, for 

 the quotation from Jeffrey's The Anatomy of Woody Plants; 

 ]\lcfiraw-llill IJook Company, for the (piotations from Sliarp's 

 Introduction to Cj/toloc/y and Eames and ^IcDaniel's Introduc- 

 tion to Plant Anatomy : Longman's Green and Company, for the 

 (piotations from Priestley and Scott's Introduction to Botany; 

 The Mac.Milhiii Company, for the (|Uotations from Ilabei-Iandt's 

 Physif)lo(jic(d Plant Aiiafomy. Strasl)urger's Tc.rfhooli of Botany 

 and Hay ward's The Structure of Economic Phnifs. 



