74 
SEVENTH ANNUAL MEETING OF THE 
can try remedies and we hope to report the result of these ex¬ 
periments later. 
LEMON SCAB. 
” I have since the 1st of February given my almost undivided 
attention to this disease, and wish to thank Mr. Sampson and 
Mr. Buffum for their efforts to aid me. I have found the 
disease to be caused by a very minute fungus. The disease 
proves to be exceedingly difficult to combat since the young 
fruits can be infected for at least two months. I have no 
doubt we will finally be able to overcome the disease. We 
have found the copper sprays to be the best remedies. I have 
found the Bordeaux Mixture very good. I expect to get out 
a bulletin from Washington on this Bordeaux Mixture and a 
copy will be forwarded to each member, and also the report 
on treating the lemon scab when it is published. Prof. Web¬ 
ber will report later on his experiments with die-back. 
J. H. Wright —It has been my experience in using Bor¬ 
deaux Mixture that it is a preventive more than a cure. 
The “ White Fly ” And “ Sooty Mould.” 
Verbal repoit by Pio r , H. J. Webber, of the Sub-Tropical Laboratory 
the United S'ates Department ot' Agriculure, Eustis, Fia., made 
in compliance with the special request ot the Society, preferred at 
its last met ting. 
In fighting insect and fungus pests it is first necessary that 
we know something of their life history, growth, transfor¬ 
mations, habits, etc., that we may more intelligently combat 
them. 
The Sooty Mould is a saprophytic fungus, deriving its nour¬ 
ishment, not directly from the orange, as is sometimes sup¬ 
posed, but from sugary excretions exuded by certain insects, 
which it always follows. 
In Florida Sooty Mould only becomes serious when it fol¬ 
lows the White Fly, aleyrodes citric and it is with its treat¬ 
ment in this connection that we are concerned 
The logical way, and apparently the only effective way to 
treat this disease is to destroy the insect pest which the fun¬ 
gus follows. As soon as the insects are removed and the sup- 
