No. 4.] FRUIT GROWING. 167 



either plain water, or in applying fungicides and insecticides 

 perfectly and economically, and should be in the hands of 

 every grower of plants. 



This hydrosprayer is simple in construction, and little 

 liable to get out of order. A very small amount of skill 

 will suffice to keep the packing in perfect shape. The spray 

 is as fine as that of the adjustable nozzle of the force-pump. 

 It will reach every portion of a tree within twenty-five feet. 

 It is in no sense unduly fatiguing when used continuously. 

 It is especially adapted for Bordeaux mixture or Paris green, 

 as with each filling the materials may be kept in a most per- 

 fect state of suspension. 



It is used in this way. The liquid is transported in a bar- 

 rel standing upright upon a stone boat. The operator dips 

 out a three-gallon pailful, first stirring if necessary, and 

 places it by the side of the tree to be sprayed. If Paris 

 green is to be used, it is then added. A level teaspoonful 

 of the green, weighing just one-fourth of an ounce, is the 

 right quantity for three gallons of water. The syringe, 

 employed as a stirrer, is filled and used two or three times, 

 when the pail is moved along, and this is repeated until the 

 tree is finished. Somewhat to my surprise, I found that the 

 same number of men could put on quite as much water in a 

 given time with these sprayers as could be done with the 

 force-pump, while the quality of the work was beyond com- 

 parison. 



For spraying a large number of small trees like plums, 

 peaches or nursery stock, but especially for use in the vine- 

 yard, potato field or strawberry patch, a knapsack pump 

 may be found desirable, on account of the convenience of 

 transporting the liquid. These machines are made to carry 

 about five gallons, and are worked by a small force-pump, 

 driven with one hand, while the other directs the spray 

 through a Vermorel nozzle as the operator walks along. 

 The only objection that I have found to its use thus far is, 

 that every time I employed its services it was necessary to 

 have a tinker or a machinist with reach. Cheapness in 

 construction, together with efficiency and durability in work- 

 ing, are not entirely compatible conditions. None that I have 

 seen are well adapted for the use of Paris green or Bordeaux 



