8 ILLUSTRATIOXS. 



Pace. 



Kiu. 30. Diiidriiiu sliowiii;; ;iver;ig<' progress ol' (liametiT growth ibnast lii;;li) of (loiiiiiiaiit trees 108 



31. Diagrniii Hliowiiig diiiiiiBter growth of dimiinant trees at various heights I'nuii ground (average 



ihrmighiMit range) 108 



3l'. Diagram showing diameter growth of codoniinant trees at various heights from ground (average 



throughout range) 109 



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



tlirougliotit riingii 109 



34. liia^'ram showing diameter growth of dominant trees at various heights from ground in Wisconsin.. Ill 



35. Iiia"rani sliowing diameter growth of op])re8sed trees at various licights from ground in Wiseonsin. . Ill 

 3t). Diagram showing diameter growth of dominant trees at various heights from gruuud in IVnnsylvania. 113 



37. Diaj;ram sliowing diameter growth ol eodominant trees at various height.s from ground in I'ennsN Ivania 113 



38. Dia'Tam showing diamiter growth of dominant tncs at various heiglits from ground in Mi<higan. .. 115 

 3!l. l>ia<'ram showing diameter growth of codoniinant trees at various Iniglits from ground in Miiliigan. 115 

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



