18*- 



into the cylinder, which is air-tight. When a sufficient 

 amount of pressure has been produced, the spray fluid is 

 allowed to be forced out by the air pressure. In using 

 this type of sprayer it is not necessary for the operator to 

 pump and spray at the same time. 



Bucket Sprayers. These are small pumps which are 

 adapted for use in a bucket or other small vessel. They 

 are very useful in applying a spray to a small number of 

 plants, in a garden or conservatory; 



Garden syringes and atomizers are hand sprayers 

 adapted for treating small plants or a few of them. Their 

 small cost and their adaptability to the requirements of 

 persons having only a few plants to treat, make these 

 instruments more popular than the more expensive ones, 

 Many of them, however, get out of order easily if not used 

 for a time, and others have the disadvantage of not 

 throwing a fine spray. 



A sprayer of this general type that has given satis- 

 faction in the West Indies, as far as it has been tried, is 

 called the Abol syringe ; it is equipped with a drip preven- 



Fig. 174. Abol syringe. 

 Length slightly reduced. (Redrawn from advertisement.} 



ter which saves the operator from becoming wetted with 

 the drip running back down the syringe, and is provided 

 with a good nozzle, which produces a very satisfactory 

 spray, very similar to that formed by the Ver morel nozzle. 



For the application of dry insecticides such as Paris 

 green, lime and sulphur and similar substances, as a dust, 

 the powder gun, the bellows, or the cloth bag are all of 

 value for certain purposes, and such insecticides may also 

 be applied direct from the hand in the manner of a sower 

 sowing small seed broadcast. This last method should be 

 generally employed in treating trees, such as the orange 

 or lime, which are too tall to allow bags or a powder gun 

 to be employed. 



