Barton M. Blum

• Animal damage to young spruce and fir in Maine
• Excessive exposure stimulates epicormic branching in young northern hardwoods
• Growth trends in pruned red spruce trees
• Some correlations between sugar maple tree characteristics and sap and sugar yields
• Some observations on age relationships in spruce-fir regeneration
• The accuracy of mean-growth estimates made with dial-gage dendrometers
• Plastic tubing for collecting maple sap