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Pomona College Journal of Economic Botany 



the Limoneira Packing House, made a great number of tests. He bound 

 clean and healthy lemons to those affected, wrapped them together and placed 

 them in a moist tent where infection would take place readily. The operation 

 was repeated a great many times at various periods, but in no instance was 

 the infection contagious. 



The "canker" or fruit-spot shows up among the lemons to no little degree 

 in the packing house, though greatest care is exercised in the washing 

 of the fruit. The common treatment is to add one pound of bluestone to every 

 1000 gallons of water in the washer tank. This is renewed from time to 

 time to keep the proportions fairly even. If the tank is treated in the morning 

 with a fresh supply of the bluestone about one-half the amount is added to 

 the same solution at mid-day. 



Mr. Hume states that "many shippers wash their fruit before shipping it. 

 Ammonical Solution of Copper Carbonate may be added to the water used 

 in washing. Another good substance for this purpose would be Potassium 

 Sulphide."— Bull. No. 74, Fla. Agrcl. Exp. Sta., p. 172, 1904. 



