PEEFACE. 



THIS is a book on elementary forestry, and has been pre- 

 pared especially for students and others beginning this sub- 

 ject. It is also intended for the general reader who wishes 

 to secure a general idea of the subject of forestry in North 

 America. 



Much of the matter included herein was originally pub- 

 lished by the Geological and National History Survey of 

 Minnesota under the title " Forestry in Minnesota." The 

 favor with which that work was received has encouraged 

 the publishers to get out this volume, in which the matter is 

 treated in a more general way and enlarged to better adapt 

 it to the whole country. 



SAMUEL B. GREEN. 

 UNIVERSITY OF MINNESOTA, 

 ST. ANTHONY PARK, MINN., April, 1903. 



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