LICE ON PEAS, ROSES, AND GOLDEN GLOW 255 



twenty-fifth of an inch in diameter. The winged males are minute, 

 and are yellow, mottled with reddish brown (Fig. 257). In a 

 general way the life history of this scale is identical with that of 

 the other scales. The methods of control are practically the same 

 as for the others. 



Palms, ferns, and other house plants affected with a few scales 

 can be freed of these pests by the use of an old tooth-brush dipped 

 in strong soapsuds to which tobacco extract has been added. 

 The plants are afterward washed with pure water. 



The White Fly. Scattering of powdered sulfur on hot water 

 pipes or steam pipes of greenhouses, it is claimed, is more or less 

 efficacious in exterminating the white fly and red spider. (See 

 pages 46 and 67.) 



Plant Lice or Aphids. These insects are generally controlled 

 by fumigation with nicofume paper. Fumigation with cyanide 

 of potassium or other approved agent is one of the best remedies 

 for greenhouse pests, but it must be done understandingly and 

 with proper precautions. (See page 64.) 



Sow Bugs or Wood Lice. These small, grayish forms (Conis- 

 cus) are not true insects. They are among the most troublesome 

 of greenhouse pests. However, they may be easily controlled by 

 a mixture of sugar and Paris green sprinkled along the edge of 

 the boards forming the sides of the beds. This will attract and 

 kill many. In fact, this seems to be the approved remedy. It is 

 claimed that slices of young, juicy potatoes, sprinkled with Paris 

 green and left in places frequented by the sow bugs, are also 

 efficacious. (See page 44.) 



SOME INSECTS OF THE FLOWER GARDEN 



Lice on Peas, Roses, Golden Glow and other plants. A small 

 cake of ivory soap, or a similar quantity of good laundry soap, 

 dissolved in five gallons of hot water and the solution sprayed 

 forcibly against these insects, is effective in exterminating them. 

 The spray will not injure delicate plants. Each louse should be 

 hit with the liquid, and a repetition of the treatment may be 

 necessary, for if even a few escape destruction the plant will 

 very shortly become infested again. Tobacco extract, or nicotine 

 sulfate, added to the solution, at the rate of two tablespoonfuls 

 to the gallon, will increase its efficiency. A forcible spraying, 

 frequently repeated with water from the garden hose, will wash 

 lice off of sweet peas and other delicate plants. 



