Don C. Bragg is a Graduate Research Assistant, School of Forestry and Wood Products, Michigan Technological University, Houghton, Michigan.

Douglas D. Stokke is a Research Forest Products Technologist with the North Central Forest Experiment Station, Carbondale, Illinois.

ACKNOWLEDGMENTS

We would like to gratefully acknowledge the assistance of everyone involved in the development of this paper. Special thanks go to Dr. Stephen Shetron, Dr. Glenn Mroz, Dr. David Reed, and Mr. Jim Dougovito at Michigan Technological University for their helpful comments and insights. We "also thmnk Mr. Tom Steele, the Kemp Biological Station, and UW-Madison's College of Agricultural and Life Sciences for allowing us to use their facilities for sample plots and photographs. Mr. Don L. Bragg graciously gave his time, efforts, and skill in providing the photographs for this paper. We would also like to acknowledge Dr. George Rink of the North Central Forest Experiment Station in Carbondale, IL, for translating important sections of Korovin and Zuikhina's (1985) work.

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