26 THE FLORIDA ENTOMOLOGIST 
session of the legislature, has taken up his residence in San- 
ford. He gave an address on controlling truck crop insects dur- 
ing Farmers’ Week at Gainesville. The truckers of Florida are 
to be congratulated upon securing the services of a man of Dr. 
Ball’s wide experience and ability. 
Mr. Archie N. Tissot has been elected assistant Entomologist 
of the Experiment Station in the place of Mr. A. H. Beyer, who 
has resigned to devote his time to his numerous grove interests. 
Mr. Tissot received his Master’s Degree in June from Ohio 
State University. He is now teaching in the summer school 
there, and will take up his duties in Florida on September first. 
Mr. W. W. Yothers, of the Bureau of Entomology at Orlando, 
is travelling in the Pacific Coast states, investigating the use 
of oil emulsion sprays there. 
Dr. H. L. Dozier has resigned his position with the Insular 
Experiment Station at Rio de Piedras, Porto Rico, to accept a 
position as entomologist for the Delaware Station at Newark. 
Mr. A. C. Brown has resigned from the State Plant Board to 
take up grove development work at Ft. Lauderdale. 
ANOTHER YEAR OF THE CITRUS APHIS 
(Continued from page 13.) 
Dusting in the open with nicotine sulphate lime dusts is 
effective if there is no wind, but this condition is seldom met 
during the aphid season. To be highly effective the cloud of dust 
should hover over the tree a full minute. Much of the dusting 
done this season has given unsatisfactory results because of 
wind or poor dust. Some of the dusting done with a power 
duster on auiet nights has been very effective, an hour’s search 
in the grove the following day failing to yield a single live aphid. 
Spraying, too, is effective if thoroly done and done in time, 
i. e., before the aphids have curled the leaves. It is difficult to 
get a spray into the curled leaves. The oil emulsions, lime sul- 
phur, and soap sprays are effective, but the kill is much more 
thoro if nicotine sulphate is added. But to get a satisfactory 
control by spraying one must do much more thoro work than has 
