80 



Angle bends can be fitted on the end to 

 which nozzles should be attached, making 

 the operation easy for spraying either the 

 top or under surfaces of leaves. 



Powder Sprayers. 



These machines are intended for dusting 

 plants such as potatoes, gooseberries, 

 strawberries, vines, etc., with flowers of 

 sulphur, etc., for mildew, or with helle- 

 bore powder for gooseberry caterpillars. 



Horse-Power Machines. — In large plan- 

 tations a horse- or pony-drawn sprayer is 

 used, worked similarly to the other pony- 

 drawn machines before mentioned, and the 

 dust is spread in a fine powder on to the 

 plants, usually when the dew is on the 

 leaves to cause adhesion. Powder is 

 found to enter the curled-up leaves where 

 there is plum aphis, and kills the insects 



better than any spray, which cannot enter 

 curled leaves. 



Knapsack Powder Distributors.— These 

 are similar in construction to the Vermorel 

 knapsack pump, and hold 15-30lbs. of 

 ])Owder. 



A short delivery hose fitted with a cone 

 ejector cause the powder to be emitted in 

 a fine dust, but, unfortunately, not very 

 evenly. 



Powder Syringe. — A good instrument for 

 vineries or where only a little dusting is 

 required. Much like an ordinary syringe, 

 but fitted with a container of l-3lbs. capa- 

 city near the ejector end of the syringe, 

 and worked by pumping, which causes a 

 flow of dust from a small hole. 



I wish to acknowledge Mr. F. J. Chit- 

 tenden's great help in giving advice 

 for the writing of this article. 



