52 



BROOKLYN BOTANIC GARDEN MEMOIRS 



Figure i8. Rate of growth of 

 the scarlet oak {Quercui coccinea) on 

 the windward and leeward sides of the 

 Hither Woods, expressed in increase in 

 mm. of diameter at each ten year pe- 

 riod. The hardness of the wood pre- 

 vented deeper increment borings than 

 are indicated. Upper curve an average 

 of 20 trees on the leeward side; lower, 

 of 20 on the windward side. 



^o 



Figure 19. Age in years 

 at each cm. of diameter 

 growth of the scarlet oak 

 {Quercus coccinea) on the 

 windward and leeward sides 

 of the Hither Woods. Upper 

 curve = wind ward side, lower 

 curve = leeward side. 



\e yrs^ 



