142 



HANDBOOK OF NATURE STUDY 



5. Tlie flowers of the Paper Birch. 



The staminate catkins are produced in two or three flow- 

 ered clusters, which are formed in the fall. They are from 

 three to four inches long, and in early spring, when they 



FIG. 29. PAPER BIRCH. 

 a, twig with leaves ; 6, flowers ; c, fruit. ' and b reduced. 



