April. 1915. 



KNOWLEDGE. 



123 



FlGL'KE y3. 



A Beech Pollard, showing the large mass of heavy 



branches, which if not removed will destroy the 



hollow trunk. 



Figure y-t. 



A Pollard that has lost one side, and to pn 

 which the limbs must be lopped. 



Win and prop i" prevent the Pollard from breaking up. 



