60 THE FLORIDA ENTOMOLOGIST 
The address of the retiring president was given by Mr. Frank 
Stirling on ‘Commercial Entomology”. The speaker presented 
a number of interesting phases which were discussed freely by 
those present. Dr. Berger exhibited an unusually strong colony of 
Vedalia on Cottony Cushion Scale. Mr. Walker and Mr. Trigg 
were elected to membership in the Society. 
March 28. The meeting was called to order by the president, 
Geo. B. Merrill, with the following members present: Chaffin, 
Merrill, Hunt, Trigg, Ayers, Floyd, Montgomery, Watson, Ber- 
ger, Rogers, Walker and Beyer. 
Mr. A. H. Beyer, Business Manager of the FLORIDA ENTO- 
MOLOGIST, gave a report on the finances which was approved 
by the Society and a copy was filed with the minutes. 
The president called on the first speaker of the evening, Prof. 
J. R. Watson, who spoke on “Sulphur Dust for the Control of 
Purple Mite and Rust Mite’. Prof. Watson pointed out the fol- 
lowing interesting facts regarding dusting: that it is safer than 
spraying, no danger of burning foliage; the cheapness is an out- 
- standing feature, only one-fourth the cost of spraying, no water 
to haul; and it covers the ground quickly—the greatest advan- 
tage. Disadvantages: no dust will control whitefly, therefore a 
spraying and a dusting machine are necessary for the same grove, 
a heavy expense to the small grower. Dusting may not last as 
long as the spray application. Mr. Yothers’ dusting results were 
quoted where he recorded effective control of Purple Mite on 
citrus with a temperature of 95 or above but not at a tempera- 
ture below 85. Prof. Watson also mentioned the lack of fertility 
of Blackberry hybrids often being laid to thrips injury. 
The Vice President, Dr. Rogers, called on the next speaker, 
A. H. Beyer, whose subject was “Nicotine Dust for the Control 
of Bean Jassid and Pea Aphis”. But two important phases of 
this paper were summarized owing to the short time: first, the 
method of application of dust; second, the importance of the 
strength of the dust. A duster producing a continuous flow of 
dust was found most satisfactory for speed and efficiency; a 
covering over plants to confine dust also found valuable. Dusts 
that were used gave best results where they were most heavily 
impregnated with nicotine sulphate ranging from 5 to 10 percent, 
in which case the nymphs of the bean jassid were largely con- 
trolled while the adults were not affected. The pea aphis was 
well controlled where the dust came in contact with the bodies of 
the insects.—A. H. Beyer, Secretary. 
