ACKNOWLEDGEMENTS 



The author is indebted to Dr. Joseph Seibejlich of the University 

 of New Hampshire Engineering Experiment Station; Roger P. 

 Sloan, Extension Forester in Rockingham County; and Aldis J. 

 Christie, Consulting Forester. Each rendered valuable assistance 



in advice and field tests. 



COVER: This is the simple method of inserting the chemically- 

 treated paper tab into a tree which is to be killed. 



Photographs by the Author 



April 1954 



