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STREET TREES. 9 
gaps can be replanted with young trees of that sort. If there are 
poor trees of a good variety or trees of a poor or short-lived variety 
it would be advisable to remove these and do all the replanting at 
one time, so as to have the trees on the street as nearly uniform as 
possible. Where there are several good varieties in good condition 
Pi4531HP 
Tic. 8.—Trees 20 feet apart that should be at least 60 feet apart. Sycamores in Washington, D. C., as 
they appear in late winter. 
the sensible thing is to care for the trees that are there and then, after 
careful study, decide on one variety for all future plantings on that 
street. 
SPACING TREES. 
A common fault in all street. planting is to put the trees too near 
together. (Fig. 8.) This is more evident where the work has 
been done by the abutting property owners than by municipalities. 
After trees are started and have attained some size it is extremely 
difficult to get them removed, even where the good of the remaining 
trees demands it. The removal of a fairly good tree merely because 
137389°—19—Bull. 816——2 
