KNOT ZONES AND SPIRAL IN ADIRONDACK RED SPRUCE 791 



Clear, straight-gia 



-liiucfj tree suitable for airplane stock, season-checked after removal of 

 the bark. Tree was cut for pulp. 



Spruce log showing severe right spiral and I. . p v, ,, -n . h, rk', from removal of bark. Log 

 cut a month previous for pulp. 



