FOREST PLANTING LN THE LAKE STATES 
41 
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NORWAY 
PINE 
WHITE 
PINE 
JACK 
PINE 
NORWAY 
SPRUCE 
Figdke 5. — Effect of competition of natural tree growth on the height growth of 
planted trees. Wide bar marks average of all plots ; single plots that attain 
more than the average are notched on narrow bar, numerals indicating two or 
more plots -of the same height 
