December, '08] 



JOURNAL OF ECONOMIC ENTOMOLOGY 



379 



This count gives 91.7 per cent killed by this spraying. Plants show 

 no signs of damage from spraying. On the date of this examination 

 the sulphur was found still adhering to the beans in small particles. 



(c) In making this spray the lye should be finely pulverized. 



(d) In making this spray the sulphur should be made into a thin 

 paste with a small amount of water, after which the balance of the 

 water is added. 



Experiment No. 4. — ]\Iay 29, 1908. Kerosene-soap emulsion (1 

 part of the stock solution to 10 parts of water, e) was sprayed on a 

 row of wax beans, using an underspray. 



This was applied at 10.30 a. m. with a bright sun and a good breeze. 

 On May 30 a number of sprayed plants and cheeks were examined 

 Avith the following results : 



TABLE FOR FORMULA e 



This count gives a total of 95 per cent killed by this spray. The 

 plants show a few leaves with burned edges, but in no ease seriously. 



(e) This stock was made up four weeks previous to using, and the 

 Avriter finds a small amount of free oil. 



SUMMARY OF EXPERIMENTS IN SPRAYING FOR THE RED SPIDER 



Conclusion 



The results of these experiments show that this pest can be con- 

 trolled by spraying with any of these four insecticides ; but because 

 of the difficulty experienced in making the kerosene emulsion, as com- 

 pared with the other three, it is not likely to be employed, at least 

 in Florida. 



At the same time that these experiments were conducted, observa- 

 tions were made on the effect of rain on the red spider. On the 27th 



