212 AGRICULTURE FOR COMMON SCHOOLS 



move chunks. Mix the lime and copper sulphate by pouring 

 from each vessel at the same time into a third vessel. It is 

 very important to do this in order to get a perfect mixture. 

 Stir up this mixture with fifty gallons of water in a coal- 

 oil barrel. When it is desired to spray for insects and plant 

 diseases at the same time, four ounces of Paris green or Lon- 

 don purple can be added to the above quantities. For tender 

 plants only one-half of the quantities of lime and copper sul- 

 phate should be used. 



Copper Sulphate Solution .^This is made exactly as the 

 Bordeaux mixture, except that the lime is left out. It is to be 

 used only before the buds begin to swell. 



