Show I i nome iT Town I tn lp t TARRED ROADS AFFECT TREES Investigation Invest Has Shown Conclusively ly j Their Disastrous D Results on Neighboring Vegetation The Injurious effects of tarred roads upon neighboring v vegetation have been Men described In numerous articles emanating emanating emanating ema ema- from both American and Europ European Euro Euro- p pear n sources One of ot the latest InvestIgations investigations investigations of this subject has been made at Milan by U. U The plants most susceptible to damage of tl this sort says Signor Signer Brill are species of horse chestnut and the leaves of which at the beginning of ot summer turn rusty at the edge and curl up slightly while their surface Is covered with numer numerous numer oils ous ous small spots which at first first are are yellow and look as If If covered with a athin athin thin layer of shining varnish The leaf leat then curls up more and more dries anci and Is easily blown away away Other plants very sensitive to the effects of tar are Forsythia Fagus Indica Magnolia Magnolia Mag Mag- nolia nolla Deutzia and Cornus The damage Is caused almost ent entirely reli by the very fine dust raised by tb the passage of motorcars This di st settles settles settles set set- slowly and Is most abundant on low plants and the lower branches of trees Once deposited the small par titles tides of tar give off Injurious vapors vapors when strongly heated by the sun Plant Plant and parts of plants plants' not directly reached reach reach- ed by the sun never never show this dama damage damage dam dam- a age e while plants exposed to the sup BUD BUDare UI are Injured In proportion to the i In Intensity Intensity Intensity and duration of sunshine The Tho best remedy Is to keep down th the dust by the regular and abundant watering of the roads Sc Scientific Scientific American American |