FLORIDA STATE HORTICULTURAL SOCIETY. 
83 
juice in Tour different strengths on the White fly, in my 
experiments at Gainesville. The solution is apparently im¬ 
practicable, as it kills only about 15 per cent, of the larvae or 
pupa of the fly. Continuing in reply to the question of a 
member: I consider the rosin wash or rosin soap, discussed 
in my remarks on the subject, as probably the best remedy 
for the White fly. I learn from inquiry that this pest appar- 
vently first became serious at Panasoffkee. It appeared there 
^some seventeen or eighteen years ago. 
H. B. Stephens —I have a grove at Panasoflkee, started 
about five years ago. Shortly afterward the White fly ap¬ 
peared. I did not know what it was at first, but found later 
That it was the White fly, and that it was the worst enemy we 
thad. They spread very easily ; the trains undoubtedly carry 
Them from one section to another. Last year we commenced 
operations against the White fly. We burned tobacco, sul¬ 
phur and Dalmation powder under the trees, confining the 
fumes by a tnnt over the trees, but did not find this effective, 
rand confined ourselves to tobacco juice and sulphur solution. 
In the fall there was no smut on the fruit, and I felt that I 
had accomplished something. This spring Prof. Webber 
came through and examined the trees and he said he did not 
find any living insects on them. 
Mr. Duncan —How to destroy the White fly is what we all 
want to know. This rosin wash acts like a varnish and will 
be more lasting than anything else. Sulphur solution will 
dry and wash ofi the tree, but the rosin wash will last two or 
three weeks unless t he rains are very heavy. I think the 
rosin wash is the best for the White fly. 
Mr. Bacon —I think, myself, that the rosin wash is the 
most effective of the two ; but the sulphur and lime solution 
does not wash off immediately. You can smell the sulphur 
Tor months after an application. 
Geo. R. Fairbanks —I wish to say something about insect 
pests. 1 came to Florida fifty years ago. The orange trees 
had been previously cut to the ground by the cold. They 
had grown up rapidly from the roots and about the time they 
came into bearing again I was at St. Augustine. At this 
time the scale insect appeared. It was said to have been 
brought in upon trees imported from Italy. In the course of 
five years it had attacked every tree at St. Augustine and 
along the St. Johns river. The trees looked as if a fire had 
gone through them, and everybody said there was no use try¬ 
ing to do anything with them. They left them alone. In a 
■few years, from some cause or other, the insects disappeared 
.and orange culture revived. It was said that the insect had 
