In days of extreme heat what a difference in comfort there would be between the bare sun-baked expanses of the streets of many a town, such as we all know, and the same spaces carefully planted with shade-giving trees! In very narrow streets trees are, of course, out of the question, or in any street whose width is not enough to allow of easy traffic and trees as well, but one cannot walk through any town, except the very few in which the question has already been considered and satisfactorily answered, without seeing many a street or waste space or corner where a row or a group or even a single tree would not add immensely to both beauty and comfort. Where there is plenty of width, and especially where houses fall back a little from the road, the trees may well stand just within the edge of the footpath or pavement. Should there be still more width, there may be a row in the middle of the road. In this case the middle row of trees should not be quite evenly continuous, but perhaps five or six trees and then a gap, formed by leaving out one tree, in order to allow the traffic to move from side to side of the road. In many a town where a street runs north-east and south-west, a row of trees on its south-western side only might be an inestimable boon.
Even in country villages there is often a bare place, especially where roads meet, where a few trees well planted and a plain strong oak bench would be a comfort and a pleasure to many hardworking folk, and might be the means of converting unsightliness into beauty.
[Illustration: _PLANE TREE (Platanus orientalis)._]
For towns the Plane has the best character, but other good trees are Wych Elm and Hornbeam, Sycamore, Maple, Lime, Lombardy Poplar, and Horse Chestnut. The spreading growth of the Horse Chestnut commends it rather for a space like the _place_ of a foreign town. Here is also the place for Limes, for though they are good street trees, yet when in bloom the strong, sweet scent, although a passing whiff is delicious, might be an annoyance if poured continuously into the windows of houses during the blooming time.
The Wild Cherry, with its quantity of early bloom, would be a beautiful street tree, and in places where trees of rather smaller growth are desired there is the Bird Cherry and the Mountain Ash. The large American Mountain Ash is a good street tree, in autumn loaded with its handsome bunches of scarlet fruit.
