302 THE MONTHLY BULLETIN. 



each gallon of water, aceortlin.u' to tlie above formula. The sulphur is 

 . made into a paste also and added with the flour paste and lime-sulphur 

 solution to the two hundred gallons of water in the spray tank. This 

 spray is excellent for tlie red spiders on almond and citrus trees. Minus 

 the lime-sulphur solution it is a very effective spray for the yellow mite 

 {Tcfranychvs himaculatus) on hops. 



Xo. 2. (Iron Sulphide). 



Water 200 gallons 



Flour paste. S pounds flour in 8 gallons water 



Linie-.sulphur solution 2i gallons 



Iron sulphate 4 jiounds 



This spray is mixed as the preceding, and the iron sulphate after 

 being dissolved is added directly to the diluted mixture in the tank. 



The above spray is especially recommended for late summer sprayings 

 for red spider on almond and citrus trees, but should not be applied to 

 fruit trees just before the fruit is ready to pick, as the fruit might be 

 stained. 



EMULSIONS. 



Emulsions are oily sprays in which soap is used as an emulsifying 

 agent. They are especially valuable where high power of penetration 

 is necessary or where there is a waxy covering to overcome, as in the 

 ease of woolly aphis, mealy bugs, etc. They also have the power of 

 rapid and even distribution over the sprayed surface. If properly 

 prepared, emulsions and water mix easily without agitation and are 

 suitable for spraying tough and tender foliage alike. 



Certain commercial emulsions are made by breaking up the oils into 

 exceedingly small particles, thus forming a creamy liriuid which readily 

 mixes wifh water. 



KEROSENE EMULSION. 



Whale oil soap 40 pounds 



Water 2 gallons 



Kerosene 4 gallons 



First dissolve the pound of soat) in two gallons of hot soft water. 

 When this is accomplished add the kero ene and agitate vigorously by 

 pumping it back into itself until a thick creamy liquid results. This 

 makes the stock solution. 



P^or use on dormant trees and plants in the winter dilute the stock 

 solution one to five of water. On trees or plants in foliage dilute with 

 ten parts of water. 



In giving directions for diluting kerosene emuhion many writers 

 recommend the use of a certain per cent. This is exceedingly confusing- 

 to the average orchardist, and in ordei' to liave the information neees- 



