PP5E-5TODY REVIEW 



% Devoted to Elementary Science in the Schools 



OFFICIAL ORGAN OF THE 



American Nature-Study Society 



THE 

 TREE- 

 STUDY 

 NUMBER 





OCTOBER 1920 





Vol. 16 No. 7 





Whole No. 138 





20c a copy $1.50 a year 



Yellow Birch 





Photo by Verne Morton 





