MARVIN W. FOILES is a Silviculturist at the Inter- 

 mountain Station's Forestry Sciences Laboratory 

 in Moscow, Idaho. After receiving his B. S. de- 

 gree in Forestry from Colorado State University 

 in 1947 he joined the Northern Rocky Mountain 

 Station and since then has been engaged in silvi- 

 cultural research in the northern Rockies. From 

 1948 to 1957 he worked in the Western White Pine 

 Project at the Inland Empire Research Center in 

 Spokane, Washington. From 1957 to 1967 he 

 was assigned to the Ponderosa Pine Silviculture 

 Research Project in Boise, Idaho. 



