IT 



tention at the present time to enter into an extensive de- 

 scription of either of these insects. For a fuller discussion 

 of the subject the reader is referred to Circular No. 1, is- 

 sued from this department in October, 1906. It is enough 

 to say here that the same means of control are applicable 

 and recommended for both insects. 



These consist solely of contact sprays and the one in 

 most general use, and at present most satisfactory, is the 

 o-called Lime-Sulfur-Salt spray. This may be made by 

 the following formula : 



Lime 30 pounds. 



Sulfur 20 pounds. 



Salt 5 pounds. 



Water 60 gallons. 



Preparation.* "For preparing the wash two vats or boil- 

 ers are necessary, and if the spraying is to be done on a 

 large scale, one of these, at least, should hold a couple of 

 hundred gallons. If a smaller number of trees are to ba 

 treated, iron kettles will answer the purpose. Of course 

 the preferable way of cooking the wash is by means of live 

 steam. 



Many ways have been suggested for mixing the materials, 

 but the results are the same in every case, so long as the 

 mixture Eas been subjected to the required amount of boil- 

 ing. It is largely a matter of convenience, then, that de- 

 termines the particular method, and the one found to best 

 answer this requirement is as follows : 



First, place two or three inches of water in the boiler, 

 and to this add the sulfur, which has previously been made 

 into a paste by mixing with hot water in order to remove 

 the lumps, or sift the dry sulfur through a mosquito wire 

 netting and stir in thoroughly. Then add about one fourth 

 of the lime, and when the violent boiling has ceased add 

 another fourth, and so on until the required amount of 

 lime has been added. Hot water should be added with the 

 lime as needed, so as to make the mixture a creamy 

 consistency. Too much water will "drown" the lime while 



*From Alabama Agric. Exper. Station, Circular No. 1, 

 Oct. 1906. 



