THE METHOD OF MOVEMENT 



193 



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 : 500 



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<T) 

 o 

 o 



J. 400 

 o. 



i_ 

 5 

 cy> 



i^ 300 



E 



i- 



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 o 500 



400 



300 



'if /P""^ 



.0 

 Inside 



-Radial distribution of bark tissues 

 {From Maskell and . 





 Outside 



0.5 



1.0 

 Inside 



and of sugars and nitrogen fractions. 

 Mason.) 



