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XXXI. A New Method of destroying Insects in Stoves and 

 Green-Houses. In a Letter to the Secretary. By Mr. James 

 Ingram. 



Read August 1, 1837. 



Sir, 



I t is gratifying to me to be enabled to inform my brother horti- 

 culturists of an effective and cheap method to destroy the Red 

 Spider, Scale, Thrips, and Green Fly, without injuring the most 

 tender plant. Where there are but few plants infested with either 

 kind of insect, take a one-light frame and place the plants infested, 

 about four inches apart, and then procure from one to two gallons 

 of green laurel leaves and well bruise them ; immediately place 

 them between the pots and close the frame with the least possible 

 delay, taking care to keep the frame air-tight ; at the expiration of 

 one hour take out the plants infested with Red Spider and Green 

 Fly, and it will be found that they cease to exist. 



It will take from eight to twelve hours to destroy the Thrips and 

 Scale ; at the expiration of that time take out the plants, place 

 them in a warm and exposed situation, and in a few days the insects 

 will all dry up and fall off. 



When plants are infested in Stoves or Greenhouses with either 

 insect the process must be a little varied. A house 12 feet by 20 

 will require about two bushels of leaves ; they can be bruised in 

 the house, and placed in a tub or box, and covered with a sack 

 or cloth until a sufficient quantity is bruised ; then they are to be 

 strewed in the paths, and between the pots and other vacant 

 places, and the house must be kept as close as possible for at 



