GREEN FLY 77 



growth, and every fly that is seen is promptly destroyed, 

 the trouble will be lessened materially. It multiplies with 

 extraordinary rapidity, and the descendants of one or two 

 pairs become a crowded city in a week. When the numbers 

 are considerable, dusting with tobacco powder or snuff, or 

 syringing with a solution of either tobacco or paraffin, will 

 do good ; but it is far better not to wait until these drastic 

 measures are necessary. 



A useful solution of tobacco can be made by soaking 

 2 ounces of strong shag tobacco in one gallon of water. 

 To make a paraffin solution, boil 4 ounces each of soft soap 

 and quassia in separate vessels ; put the liquors together in 

 about a gallon and a half of water, place on the fire, and 

 when the whole lot is boiling furiously, remove the pot, put 

 in a wineglassful of paraffin, and stir vigorously ; the working 

 in of the oil when the water is boiling hard will go far to 

 ensure perfect amalgamation. All applications of either of 

 these washes are best made in the evening after the sun has 

 gone down, but this is not essential, provided that the mixing 

 is thorough and that no raw paraffin is floating about. The 

 syringe or sprayer used must be one capable of throwing 

 a fine film, not only because this is more economical, but 

 also because it is far more efficacious. Thrips occasionally 

 attack the points of the shoots, and must be destroyed by 

 hand picking. 



The great scare in regard to diseases of Sweet Peas is 



