THE OUTDOOR WORLD 
129 
NEW YORK CITY IS USING “FLEXIFILL” IN ITS TREES. 
thing must be obtained that is not 
brittle and will not crack with the 
swaying of the tree. Even if it is put 
in in sections there are spaces in which 
moisture and germs may gain entrance, 
and expense is involved. 
Mr. F. A. Bartlett, President of the 
Bartlett Tree Expert Company, has 
solved the problem after several years 
of experimenting. He has abandoned 
this long cherished idea that the filling 
must be some form of concrete, and the 
curious thing about his invention is 
that nobody thought of it before. W ood 
particles and rubberlike asphalt would 
seem to have been the most logical 
things to have been considered a long 
time ago. These ingredients with fibers 
of asbestos and some other materials 
have resulted in the compound to 
which the trade name “Flexifill” has 
been given. Flexifill seems to contain 
everything actually needed for the pur- 
pose. It is antiseptic and preservative. 
