SPRAY PUMPS. 



171 



obtained from jtIoyos which arc laro-o for tho hands, and in siu-h the 

 hands aro not as apt to perspire. Where riil)l)er olovesare notol)tain- 

 a))le the hands may he greatly protected and kept soft by rubbing them 

 thoroughly, as often as necessary, with a piece of beef suet. 



If corrosive sprays are to be applied, such as the simple solution of 

 copper sulphate, eau celeste, etc. , it may be found necessary to protect 

 the eyes. For this purpose ordinary clear glass goggles may be used, 

 or the sprayer may provide himself with mica goggles of large size, 

 such as are worn in some portions of the country by men (>mployed 

 about thrashing machines. Both the glass and the mica goggles may 

 be usually purchased through druggists. 



PUMPS FOR YAKIOUS SIZED OUCHAllDS. 



The selection of a good spray pump is advisaldc. The difference 

 between the first cost of a poor pump and that of a good one is little, 

 while the difference in the ex- 

 pense of spraying an orchard 

 with a poor and a good pump is 

 apt to T)e considera))le. 



There are some features which 

 every spray pump should possess. 

 It should be furnished with an air 

 chamber for the regulation of the 

 flow, and the wearing parts should 

 be of brass or brass lined. It 

 should be strong and work easily, 

 be supplied with means for firm 

 attachment, and have capacity 

 sufficient to maintain the required 

 pressure without undue rapidity 

 of stroke. 



Pumps for small orchards 

 should be capable of throwing 

 two good sprays. Such pumps, 

 suited for attachment to the top 

 or side of barrels, or to other raised tanks or foundations, are shown 

 in figs. 6 and 7. These pumps are supplied with air chambers and are 

 of sufficient capacity for ordinary orchard spraying. Each has a' con- 

 nection for a small pipe leading down from the discharge pipe to the 

 bottom of the barrel or tank. By opening a stopcock in the pipe a 

 stream may be forced back into the tank close to the end of the suction 

 pipe, thus serving to free the suction from deposit and to agitate the 

 spray. These pumps can be obtained with brass-lined cylinders. 

 The stroke is upward and downward. (See also PI. XXVI.) 



Fig. 6. — Spray pump fur use on barrol or tank. 



