Show some leaves live long evergreen trees do 10 not retain their leaves forever but aro are so called because the new leaves appear before bea ore the 1 lie old ones are shad miss A pease has been studying study liiK tile the many evergreen ever greens of the pacific northwest to ascertain how long the several veral species retain their leaves slie she finds a wide variety the Mior test belll being tile the california buckthorn which sheds aleas some of its leaves in autumn and retains the others only until those of the coming season are minature inu turc the longest Is the short leaved yew retains its leaves for from ivr five to twelve years some of abern persisting for as long ions as 22 years saplings Sa illings lose their leaves more quickly than mature trees and trees in ill ohp open more quickly than those in shady places |