m 
Rules, Notes and Recipes 
209 
White Fly 
Egg, much enlarged, b. Adult female, ventral view, showing proboscis; 
much enlarged 
the use of potassium cyanide, and gives these instructions: Poorly 
constructed greenhouses may require twice as much material, or even 
more, than the well made, up-to-date house. In general, one might 
say that the amount of cyanide varies from one-fifth to one-sixth of 
an ounce to 1000 cu. ft. of space for three hours after dark, to one 
ounce to 1000 cu. ft. lasting over night. Fumigation will have to be 
repeated in two weeks. Another thing to bear in mind is the age of 
the plants. An older plant will stand a stronger dosage than a younger, 
more succulent plant. It is also well to have the temperature as low 
as 55 deg., if possible, for best results. 
Whitewasli, to Remove. — To remove whitewash from walls or 
ceiling, scrape off all loose particles with a sharp hoe, and then wash 
well with strong vinegar. A long-handled mop may be used. 
Windows, to Prevent Dimming of, by Moisture. — A leading 
drug journal gives the following formula for preventing the dimming 
of windows by moisture: Oil turpentine 1 fl. dr.; Glycerin 1 fi. oz. ; 
Potassium oleate 2 ozs. Soft soap may be used instead of the potas- 
sium oleate, though the results are not as satisfaetory. Melt the oleate 
and glycerin together on a water-bath, then add the turpentine. Should 
the paste be too thiek, it may be thinned by the addition of more gly- 
cerin. It has also been stated that all that is necessary is to rub every 
morning, or before going out, a little green soap over the surface of 
the glass, polishing it until it is bright again. Show-windows, mirrors, 
etc., may be similarly treated to prevent the dimming by moisture. 
Another method is to keep a small gas flame burning near the lower 
front of the window. 
Window Boxes. — Some of the supply houses are manufacturing 
special types of window boxes, notably Neidinger of Philadelpbia, 
Mrs. M. Eger, Syracuse, N. Y.; Garden City Flower Box Bracket Co., 
Chicago, and the Illinois Flower Box Co., Chicago, an illustration of 
whose Self-watering Window Box is given here. White Pine boxes are 
