Show on Street E lay Falling b SD Autumn Leaves ew York If Y If you have a street it t and a shade tree close toller to- to f ller her in front of your house h the leaves on the branches 1 rest est the lamp when the tree ins to lose its foliage this fall he e chances are that the branches l. l ting the most light will keep ir it leaves longest on the behavior of I I lighted lit street trees h have a v e ein en m in n made here by Dr Edwin B B. B of Columbia university e reports the retention of leaves h b the most strongly illuminated considerably past t the theof h e lse of leaf-fall leaf from the rest of r. r tree Il 11 How Light Affects Leaves Mis is studies were made on Caro- Caro rj I. I poplar two species of aire re and the crack willow all alles alles o es s able to survive the somewhat conditions of New York BJ RrY streets i rhe poplar eventually lost all of 11 leaves in the normal way but R leaves of the two sycamore ies clung fast to the tree until were frozen to death y ff |