158 JOURNAL OF ECONOMIC ENTOMOLOGY [Vol. 1 



Mr. Forbes gave the results of an attempt to introduce this fungus 

 into Illinois. Artificial cultures were prepared and placed in the 

 orchards during the spring. All of these died out during the summer. 

 A small amount of the fungus was found under cloth bands which 

 had been placed on the trees as tags. 



Mr. Worsham gave the results of his observations on this disease in 

 the peach orchards in Georgia, and stated that in some cases a large 

 number of San Jose scales had been killed by it. He expressed the 

 opinion that before this disease can be of any great economic impor- 

 tance, it will be necessary to secure a liquid substance in which the 

 spores can be mixed, the sticking qualities of which are sufficiently 

 great to enable the spores to adhere to the scales until conditions are 

 favorable for development. He had mixed spores of Aschersonia in 

 a gelatine solution of about thirty grams of gelatine to one gallon of 

 water and sprayed orange trees infested with the White Fly with 

 some success, and he thought it probable that some such method might 

 be employed with Sphaerostilhe. 



Mr. Quaintance called attention to the undesirability of placing 

 too much stress on the importance of fungus diseases in insect control. 

 These diseases are often important natural checks, but in the case of 

 such species, for instance, as the San Jose scale, the prolificacy and 

 means of spread of the species are such as to render it usually neces- 

 sary to adopt artificial means of control, such as spraying. So far 

 as he knew, the SpJuierostilbe disease of this insect, even in Florida, 

 where moisture conditions are most favorable for its development, 

 could not be relied on in place of spraying, and he thought it prob- 

 able that lime and sulphur treatment of the trees for scale would 

 greatly check or destroy the fungous disease. 



Mr. J. B. Smith pointed out that the season of 1906-1907 was such 

 that experiments with this disease failed to give valuable results. In 

 New Jersey less scale was present in 1907 than had been the case for 

 the past five years, but this was not due to the presence of the fungus. 



Mr. Forbes considered that gelatine might be added to the culture 

 material ordinarily used, and that this might assist the fungus in get- 

 ting established in the orchard. 



Mr. Burgess called attention to the effective work which had been 

 done by the fungus disease which attacks the caterpillars of the brown- 

 tail moth. He thought that if cultures of this disease could be ap- 

 plied under burlaps it might secure a good start. Large numbers of 

 trees in the moth infested district in Massachusetts are banded with 

 strips of burlap, and these strips, particularly in woodlands, retain a 

 considerable amount of moisture, which would furnish good condi- 

 tions for the development of the disease. 



