15() IXJL'RiOUS iASKCTS Ui' 1903. 



machine on a bigger scale is called for. This demand is met in 

 the so-called Cyclone Sprayer, Fig. 97, put on the market by a 

 Kansas City firm. This machine is mounted on a cart and is 

 capable of spreading an enormous cloud of dust over an orchard 

 or field. 



The following data regarding materials used in making the 

 so-called dust sprays ma\' be of use : 



■ I. One barrel of quicklime will make two and one-half barrels of dust. 



2. Five pounds of Paris Green to every barrel of lime is the proper pro- 



portion for the ordinary biting insects wdiich are found on fruit 

 trees, where the spraying is repeated several times. 



3. For Canker Worms use 10 pounds of Paris Green to every barrel o\ 



lime. 



4. For Potato Beetles and Cabbage Worms. 25 pounds to every barrel 



gives best results. When flour is used as a vehicle in the case of 

 the.se insects, use one pound Paris Green to every four pounds of 

 flour. Apply when the dew is on. This -strength (one pound 

 Paris Green to four pounds of flour") easily kills Currant Worms, 

 if applied when the dew is on. 



5. One barrel of dust, it is claimed, will spray 500 large trees thor- 



oughly. One hundred trees can be sprayed in one hour at an 

 average cost of one cent or less per tree. 



6. One method of preparing the lime for use as a dust spray (see also 



page 102) is as follows: Break one barrel of fresh lime into small 

 pieces and put in box three feet by six feet. Slack with water, 

 when Paris Green is to be used. Dissolve 25 pounds of bluestone 

 in six gallons of boiling water, and keep for use. Dissolve five 

 pounds lye in five gallons hot water. Keep these solutions sepa- 

 rate for use with the lime as a fungicide. When wanted for use 

 sprinkle on quicklime. If not enough to slack the lime, use water. 

 Five pounds of powdered sulphur can be mixed with the lime. 

 See in this connection the recipe for making "Dry Bordeau.x," on 

 page 102 of this report. 



In the issue of "The Countr}- Gentleman'' for April 2, 1903, 

 Mr. Stedman of the Missouri Station, where considerable work 

 has been done in tliis line, gives the following recipe for pre- 

 paring and using the dust: "Take 10 pounds of fresh stone lime 

 and break up the lumps so they will be about the size of 

 hen's eggs. Place these in a sieve, the bottom of which can be 

 made out of a connnon wire mosquito netting, and sprinkle water 

 over this slowly, so that the lime will take up all the water. 



