Spraying Ideals 363 



practically no accidents occur to persons or to live-stock, 

 notwithstanding the immense quantities of poisons used, 

 the continental range of the work, and the great nimiber of 

 persons employed in spraying, not only of fruit trees but 

 of street and shade trees; and yet we must look to the day 

 when effective materials of a less poisonous nature shall 

 be discovered for this important work and also when 

 greater reliance than now shall be placed on securing the 

 proper balance in nature. 



