46 TREES AS GOOD CITIZENS 
in the fall. It largely escaped injury in New England 
in the severe sleet storm of November 1921 that was 
so destructive to the Elms, Maples and other orna¬ 
mental trees. The city of Washington has used the Red 
Oak on stretches of street, with results that are not 
excelled on any thoroughfare in the city, as has also 
Atlanta, Georgia. 
Pin Oak.—-Among the Oaks, first choice for street 
planting is usually, though undeservedly, given the Pin 
Oak, so named in allusion to 
the dead twigs, which re¬ 
semble pins driven into the 
trunk. With fair soil this 
tree grows well in small area, 
and it yields to pruning in a 
way that makes it possible 
for the tree to be kept of 
relatively small size or be al¬ 
lowed to attain considerable 
development. Where the 
root area is restricted, pruning will check expansion 
of the top and hold crown and root system in the 
harmonious relationship needed for best results. The 
Broadway roof of the New York subway, far uptown, 
shows these trees, growing in shallow soil and pruned 
into formal shape with excellent effect. The Pin 
Oak has upright trunk and its crown is a natural 
pyramid, with young slender horizontal branches, nor¬ 
mally of formal outline and fine foliage. Either pruned, 
or permitted to follow its full development, the tree is 
highly desirable for street purposes. It has few enemies 
and these are easily controlled. The autumn foliage is 
a deep scarlet and extremely attractive, but the dead 
leaves hang on most of the winter. 
‘Sfe PIN OAK 
