706 Report or Horriovctorist of EXPERIMENT STATION. 
be applied as strong as one part of the mixture} to four parts 
of water. This emulsion is used to kill insects that have 
sucking mouth parts; it is not a poison but kills by 
contact. 
When applying the mixture with pumps that have rubber balls 
for valves, it must not be forgotten to replace the balls with 
marbles. 
Paris GREEN. 
Paris green is used to poison insects that have biting mouth parts. 
It may be applied either in the dry form or in a spray. When 
the spray is used the Paris green may be combined with Bor- 
deaux mixture, or it may be applied, mixed with water. In either 
case the same amount of poison is used. For pomaceous fruits 
one pound of Paris green to 150 or 200 gallons is commonly used. 
For stone fruits the mixture should be weaker, using one pound 
of Paris green to 250 or 300 gallons. When used with water, two 
pounds of fresh slaked lime must be added for each pound of 
Paris green, to prevent injury to the foliage. 
