AUTHOR'S PREFACE TO THE GERMAN EDITION 



This text-book constitutes an improved and enlarged translation of the 

 sixth Russian edition of my Plant Physiology. There are already several ex- 

 cellent text-books on this subject in German, but I venture to hope that the 

 present volume will not be without worth, especially on account of the atten- 

 tion here given to the chemical aspect of physiological processes, and also be- 

 cause of certain peculiarities in the presentation of the subject-matter itself. 



It is my pleasant duty to express my hearty thanks to Professor E. Abder- 

 halden, through whose friendly offices the pubHcation of this edition was 

 undertaken. For the translation of the book, my thanks are due to Messrs. 

 Nicolai von Adelung, S. Kostytschew, Georg Ritter and O. Walther, and I am 

 also indebted to the last three gentlemen for valuable advice. 



W. Palladin. 



