FLORIDA STATE HORTICULTURAL SOCIETY. 
81 
C. A. Bacon —Would it not be more effective to spray im¬ 
mediately afier the flies disappear when the scale is more 
tender? Would they not be more tender after the laying of 
the egg? 
Prof. Webber —I would wait until the eggs are hatched. 
The eggs are protected by a coating which it is hard to pen¬ 
etrate. 
Mr. Bielby —I would like to ask the Professor if he has 
any reason to suppose that the injury to the quality of the 
fruit which Mr. Duncan speaks of was due to this wash? 
Prof. Webber — I have not before heard of such injury bp- 
in g produced by washes of this kind. 
Mr. Bielby —Have you ever heard that they hurt the qual¬ 
ity of the orange? 
Prof. Webber—I have not, but such things do not always 
get into print. One of the main reasons for which the rosin 
wash is recommended is that it will kill scales much better 
when they are attached to the fruits than other insecticides, 
especially kerosene emulsion. This would indicate that they 
are at least not known to produce injury to the fruits. 
H. VV. Marsh —I would like to say r that Mr. J. E. Wilbur, 
of South Lake Weir, and Mr. Tilson, of Orange Bend, have 
told me that they are using Thrip juice, and that they hnve 
shipped their fruit a month earlier than usual, which they at¬ 
tribute to the effects of Thrip juic«. This was reported by 
two different men, who had no connection with each other at 
all. 
Some one asked Prof. Webber what effect Thrip juice had 
on the scale. 
Prof. Webber — I have not tried it on any scale insect ex¬ 
cept the White fly. Here it did not give satisfactory results, 
and cannot be recommended. 
A. D. Moore —I met a gentleman on the train who told me 
that he had eradicated the White fly with Thrip juice. 
Mr. Warren —I tried Thrip juice three years ago and 
found that it killed the White fly. Last year they came in 
great numbers a second time. I tried Thrip juice again and 
the first application finished them all. 
L. Montgomery —When the oranges matured were they 
full of acid? 
Mr. Warren —Yes, every one that tasted them said they 
were exceedingly nice and sweet. 
Mr. Duncan —I have a word to say about bi-sulphate of 
soda. I know two men that used this stuff on their trees and 
