542 STATE BOAitt) OF AGRICULTURE. 



CAUTIONS. 



Do not spiaj' while plants are in bloom. It is prohibited by law, 

 except when canker-worm is present, and may destroy bees and other 

 beneficial insects. 



Do not dissolve copper snlphate in an iron or I in \ossel. It will rnin 

 the vessel and spoil the spraying solution. 



For all spraying solutions containing copper sulphate, the pump must 

 be brass or porcelain lined. 



Wash out pump and entire outfit each time after using. 



Use arsenate of lead on stone fruits in preference to other forms of 

 arsenical poisons. It is less liable to burn the foliage. 



Do not spray fruits or plants with poison within a month of the time 

 when they are to be picked. 



Keep all "stock solutions" covered to prevent evaporation, and oxi- 

 dation. If a "spraA^ gun" is used try to clo the work when the mixture 

 will dry on the tree quickly. 



Do not use lime-sulphur solution as a summer spray for grapes, pota- 

 toes or tomatoes. 



Do not use Paris-green or Kedzie-mixture in combination with lime- 

 sulphur sprays. 



