• Barse, Robert G.
  North Central Forest Experiment Station, St. Paul, Mn
  
• Laidly, Paul R.
  North Central Forest Experiment Station, St. Paul, Mn
  

Red pine covers more than one million acres in Michigan, Minnesota, and Wisconsin. A large percentage of this acreage is plantations. Early thinnings of these plantations will yield pulpwood, posts, and some poles. And, specific gravity of this wood is an important quality factor affecting fiber yield, working and finishing qualities, and strength. The purpose of this note is to quantify the effect of spacing on wood specific gravity on red pine grown on a good site.