THE AUTHOR 



DAVID G. FELLIN received his B.S. degree in Forest Management 

 from the University of Idaho in 1952 and M.S. and Ph.D. de- 

 grees in Forest Entomology from Oregon State University in 

 1960 and 1966, respectively. After seven summers as a sea- 

 sonal employee on the Coeur d'Alene National Forest, he trans- 

 ferred to the Intermountain Station in 1954. From then until 

 1962 he worked on forest insect surveys and control programs. 

 At this time his primary assignment is research on defoliating 

 insects, particularly the western spruce budworm, and on 

 insects affecting regeneration. 



ACKNOWLEDGMENTS 



The author acknowledges Dr. Russel G. Mitchell, Insect Ecol- 

 ogist at the Pacific Northwest Forest and Range Experiment Station, 

 Forestry Sciences Laboratory, Corvallis, Oregon, and Dr. James E. 

 Lotan and Wyman C. Schmidt, Silviculturists at the Intermountain 

 Forest and Range Experiment Station, stationed respectively at the 

 Forestry Sciences Laboratories, Bozeman and Missoula, Montana, 

 for a critical review of the manuscript. Mr. Schmidt (as well as 

 R. F. Schmitz, Forestry Sciences Laboratory, Moscow, Idaho) 

 also collaborated in making some of the initial measurements in 

 1965. Danny On, Silviculture Branch, Division of Timber Manage- 

 ment, USDA Forest Service, Northern Region, Missoula, Montana, 

 took the photos for figures 1 and 2; figure 10 was prepared by Mrs. 

 Barbara H. Honkala, formerly Biological Research Technician, 

 Forestry Sciences Laboratory, USDA Forest Service, Missoula, 

 Montana. Personnel of the Lewis & Clark National Forest provided 

 data on silvicultural operations on the Forest. I appreciate the 

 work of Rose Ella Warner, U.S. National Museum, Washington, 

 D.C. , who identified our material as Magdalis gentihs LeC. 



