6o 



THE BOOK OF NATURE STUDY 



ages of the Ash or other tree. The development of cork and 

 bark, the position and structure of the lenticels, and the annual 

 increase in thickness of the shoot due to the activity of a 



FIG. 16. The Sycamore. I, Shoot bearing foliage-leaves, and ending in the 

 inflorescence ; 2, male or staminate flower ; 3, pistillate flower, with stamens 

 which do not open ; 4, winged fruits. (From Strasburger's Lehrbuch der Botanik^) 



growing zone just outside the wood, can all be studied in this 

 simple way. 



Space prevents entering more fully into this aspect of the study 

 of a tree, and also the description of other common trees. So many 



