Reports to various Correspondents. 51 
the wash more firmly fixed to the fruitlets and foliage. This can 
be used at ten times the strength given on p. 28 of the previous 
report. 
Scorching of Foliage and non-success of Paris Green. 
Messrs. Ellis & Son wrote during June as follows : — “ We spray 
annually as soon as the buds begin to open with Paris green 
(Blundell’s), 1 oz. to 20 gallons of water. The first spraying may do 
a little good, but once the caterpillar has grown a little it is abso- 
lutely ineffectual, and this year, although we have already sprayed 
three times and one piece four times, the caterpillar has completely 
wrecked many pieces of trees (apples), eating away the hearts of the 
buds, and the trees are simply bare poles. The different sorts seem 
to be differently affected, fine foliage sorts looking just like dead 
trees, whilst stronger growing kinds are fairly green. Although we 
always add a little lime, we think that we always scorch the foliage 
if we use stronger wash on the apples. I enclose you sample of foliage 
which has just gone brown ; do you consider this the result of spraying ? 
The strength of the wash was not greater than 1 oz. in 20 gallons. 
In our hands, I believe, after many years’ use, Paris green has been 
a complete failure in any effect it has had on Winter Moth cater- 
pillar. Of course if the brown spots which generally follow the 
spraying are not due to the Paris green in any way, we might 
probably use a stronger mixture which might prove effectual.” 
The foliage sent certainly looked as if it had been scorched with 
Paris green, the brown patches at the edges of the leaves being 
very characteristic scorching from this arsenite. Now and then this 
will occur from (1) the wash not being properly mixed ; (2) being- 
put on too heavily ; or (3) a bright sun on the sprayed leaves. 
Damage is, however, very seldom reported. I have myself often 
found Paris green of little use. Several growers who have derived 
great benefit from spraying with it have found this year it did little 
good, owing to frequent and heavy rains washing the arsenic off. 
Such conditions we cannot control, we must either let the larvae go 
on or wash again as soon as the weather clears up. With frequent 
heavy rains no wash will do any good — hence so often failures in this 
country. 
You can use Paris green up to 1 lb. to 100 gallons — more is not 
necessary and is sure to burn the leafage — unless the arsenite is very 
old and has lost its properties. But 1 in 200 is really ample, and I 
should never advise more. 
Arsenate of Lead . — This is much more effectual than Paris green 
E 2 
