AUTHOR'S PEEFACE TO THE NINTH 

 EDITION. 



IN order to preserve for my book on Forest Utilization the 

 place it has gained in forest literature, and owing to my 

 advanced age, I have shared the work of writing its ninth 

 edition with my successor in the Chair of Forest Utilization, 

 Dr. Heinrich Mayr. 



We have determined to bring the book up to date, by 

 utilizing all the available research of the nineteenth century, 

 by making purely German matter most prominent, but also 

 by taking into consideration matter from other countries, so 

 that the book may be built on a broader foundation than 

 before. 



The table of contents will show that considerable changes 

 have been made in the arrangement of material. Some 

 changes have been made also in the technical treatment of 

 the subject. Several chapters, or sections, have been rewritten, 

 or expanded, chiefly from a scientific point of view, while other 

 parts of the book have been curtailed. 



Fifty new plates have been added, bringing the number of 

 these up to 322. 



Our acknowledgments are due to the publishers, who have 

 done their duty excellently. 



It is our hope that the book, in its new form, will meet 

 with extensive support, and will prove useful to students and 

 to practical foresters. 



GAYER. 



MUHICH, 



190:5. 



