528 CITRUS FRUITS AND THEIR CULTURE. 



KAHLE^S DISTILLATE SOLUTION, FORMULA (10). 



For Scale Insects. 



Untreated Distillate, 28 degrees 5 gallons. 



Whale-oil soap 11-2 pounds. 



Boiling water 5 gallons. 



Dissolve the soap in the water. Place the distil- 

 late in the barrel of the spray pump and pour the soapy 

 water in on top. Pump the mixture out of the barrel 

 and back into it until a uniform creamy substance is 

 secured. Pumping must be continued until a complete 

 emulsion is formed and all oil globules have disappeared 

 from its surface. This makes the stock solution. 



For use on dormant trees dilute one gallon of stock 

 with from twelve to fourteen gallons of water. On grow- 

 ing trees it may be used somewhat stronger one gallon 

 of stock solution to about eleven of water. 



SODA-SULPHUR SOLUTION,, FORMULA (11). 



For Red Spider, Six-Spotted and Rust Mites. 



Sulphur 20 pounds. 



Caustic soda (98 per cent.) 10 pounds. 



Water 20 gallons. 



To make the stock solution, mix the sulphur to a 

 medium thick paste with cold water in a barrel. Then 

 add the caustic soda so that it may boil the sulphur after 

 the same manner as lime boils when slacking. Have at 

 hand twenty gallons of water and as the boiling process 

 progresses, add it to prevent burning. 



