316 Gardening 



apply them to plants may be explained in this connec- 

 tion. 



To use Paris green dry, mix it in the proportion of i 

 part to 10 parts of dry air-slaked lime, and dust the mix- 

 ture liberally over the plants while the dew is on. A 

 tin sifter or duster for use can be bought for less than 

 a dollar. A good duster can be made, however, by 

 punching small holes in one end of an empty baking- 

 powder can, by constructing a bag made of cheesecloth, 

 or by folding together the edges of a piece of loosely 

 woven burlap. Place the poison within the duster or 

 bag and use as a shaker. 



Paris green may be applied also as a liquid spray. 

 Melt i ounce of common laundry soap in 4 gallons of hot 

 water. When the mixture is cool, add i ounce (about 

 5 heaping teaspoonfuls) of Paris green, stir well, and 

 apply by means of a compressed-air or auto sprayer. 

 Good sprayers of small size costing from one to two 

 dollars are listed in the catalogues of seed firms. 



Arsenate of lead is another effective poison, and it is 

 sometimes cheaper than Paris green. To use it dry, mix 

 i part of powdered arsenate to 3 parts of air-slaked lime. 

 To make a spray, use i ounce of the arsenate of lead to 

 3 gallons of soapy water. The soap in the water is 

 needed to make the solution stick to the leaves of cab- 

 bages instead of rolling off their smooth, waxy surfaces. 



White hellebore is very generally recommended as a 

 poison for chewing insects. It may be applied as a dry 

 powder or in a spray, using i ounce of powder in i gal- 

 lon of water. It is often stated that this poison soon 

 loses its activity when exposed to air and becomes 



