Insects and Sprays 177 



Hydrocyanic gas is a most dangerous fumigant 

 and should never be used except by experts. 



Tobacco extract can be procured at almost any 

 dealer's and is safe and satisfactory to use as a dis- 

 infectant. It should be burned once every spring 

 in the greenhouse, as it is very effective in de- 

 stroying plant lice. The plants should be taken 

 out first. 



A little mustard water composed of a teaspoonf ul 

 of mustard to a quart of water will prove very 

 efficacious in killing various insects which feast on 

 the leaves of vegetables. 



Blight, mildew, leaf -spot, and rust can be eradicated 

 by the use of lime-sulphur, Bordeaux mixture and 

 ammoniacal solution of copper carbonate. 



Tree tanglefoot, wrapped and tied around the 

 lower part of the trunk of a tree, will catch and hold 

 many crawling insects which are making their way 

 to the branches to eat the tender leaves. 



When harmful worms are devastating the garden, 

 pour a little limewater around the plants which 

 they seem to attack most frequently. See that the 

 water sinks into the earth. Later, you may need 



