CONTENTS 



Page 



The Correlation of American Forest Research 16vS 



Earle H. Clapp, 



The R61e of the Microscope in the Identification and Classifica- 

 tion of the "Timbers of Commerce" 176 



Irving W. Bailey. 



A Practical Method of Preventing the Damping Off of Conifer- 

 ous Seedlings 192 



Chas. A. Scott. 



Mannan Content of the Gymnosperms . . . . . . . . 179 



A. W. Schorger. 



Forest Biology 203 



P. S. Lovejoy. 



Basic Problems in Forest Pathology 215 



E. P. Meinecke. 



Some Problems in Light as a Factor of Forest Growth . . , 225 

 Raphael Zon. 



The Role of Light in Natural and Artificial Reforestation . . 233 

 Carlos G. Bates. 



Notes and Comments 240 



Reviews 251 



Recent Publications 261 



Periodical Literature 263 



Personal Notes 269 



Society Affairs 270 



