New York Agricultural Experiment Station. 221 



leather or rubber or packing of any form to be replaced; these 

 points are of great importance. However it has been our ex- 

 perience that one season's hard use wears the cylinder so that 

 it must be replaced. 



The agitator of the Gieger is made to revolve by means of 

 gearing and a crank, and consists of a blade or paddle fastened 

 to a piece of tubing. The suction pipe is inside the tube and 

 takes up the liquids through sieves in the blade of the agitator. 

 As the pump was not received early enough in the season for 

 us to give it a thorough test we are not able to speak positively 

 as to its merits. 



TJie Defender. — The P. C. Lewis Manufacturing Company, 

 Catskill, N. Y., manufactures the Defender pump, which sells for 

 |10. It is made to fasten on the side of a barrel, and is light 

 and simple in its construction, as may be seen in the illustration. 

 All parts that come in contract with the liquids are made of 

 brass; the valves are made of leather but they are easily replaced 

 when worn out, as the parts may be unscrewed with the hand. 

 It is unfortunate that the hose couplings are of an unusual size, 

 as the hose that is supplied with most pumps cannot be used 

 interchangeably with this. 



In spite of its small size the pump is quite powerful but it 

 taxes its capacity to supply four nozzles. Its convenient form 

 and light weight will commend it for many kinds of work, while 

 its low cost brings it within the reach of all. 



Bucket pumps. — These pumps are made to fasten on a pail, and 

 are very useful where a small amount of spraying is to be done. 

 They are manufactured in great variety and may be obtained 

 from most dealers at a small cost. 



Knapsack sprayers. — These machines are small spraying out- 

 fits that are designed to carry on the back, hence the name. 

 There are several patterns manufactured by different firms, which 

 differ from each other only in minor details. In general thev 

 consist of a copper tank, holding from three to five gallons, that 

 is held in place on the back by straps over the shoulders. A 

 small force pump is operated by one hand while the nozzle is 

 directed by the other. 



