8 ILLUSTRATIONS. 



Page. 



Kir.. 30. Diagram showing average progress of diameter growth (breast high) of dominant trees 108 



31. Diagram showing diameter growth of dominant trees at various heights from ground (average 



throughout range) 108 



32. Diagram showing diameter growth of codominant trees at various heights from ground (average 



throughout range) 109 



33. Diagram showing diameter growth of oppressed trees at various heights from ground (average 



throughout range) 109 



34. Diagram showing diameter growth of dominant trees at various heights from ground in Wisconsin.. Ill 



35. Diagram showing diameter growth of oppressed trees at various heights from ground in Wisconsin.. Ill 



36. Diagram showing diameter growth of dominant trees at various heights from ground in Pennsylvania. 113 



37. Diagram showing diameter growth of codominunt trees at various heights from ground in Pennsylvania 113 



38. Diagram showing diameter growth of dominant trees at various heights from ground in Michigan... 115 



39. Diagram showing diameter growth of codominant trees at various heights from ground in Michigan. 115 



40. Diagram showing diameter growth of oppressed trees at various heights from ground in Michigan. .. 116 



