( 4 ) 
In mixing and in the use of Paris-green as a fluid dressing, 
or spray, one of the first points to be borne in mind is that 
this chemical does not dissolve in water. It is simply held in 
suspension ; the following is a good recipe for mixing so as to 
ensure the powder and water being thoroughly mixed to start 
with:—“ Two bucketsful of water are first poured into the 
can, then three tablespoonsful of good green, well mixed with 
another half-bucketful of water and strained through a funnel- 
shaped strainer .... the use of which prevents the larger 
particles of the green from getting into the can and clogging 
up the sprinkler.” 
The exact method of mixing, however, is quite immaterial— 
only remembering that the powder should be thoroughly 
diffused through the water, not allowed to he in lumps; and 
also the methods are best which allow of the operator mixing 
without handling or inhaling the powder. 
For the above reasons, and also for convenience in mixing, 
the “paste” form before-mentioned is preferable to the 
powder. 
Mixture of flour with Paris-green. —The addition of flour to 
the mixture of Paris-green has been found to answer here, 
and has been strongly advised in the United States, because 
of the greater adhesiveness thus given, and also because the 
difference of colour helps to show the amount that has been 
distributed on the leaves. “ Two or three pounds of flour” is 
an amount named as useful to add to a mixture of Paris- 
green in 40 gallons of water, but the precise quantity does 
not appear to be very important. 
Where the plan is adopted of mixing flour with the Paris- 
green, the following method has been advised :—To take a 
large galvanised iron funnel of capacity suited to the work; 
for filling a 40-gallon barrel a funnel of 18-quart capacity is 
noted. This funnel has inside it a kind of strainer (described 
as a “cross-septum”) formed of fine wire gauze, such as 
is used for sieves, and this also has vertical sides and a rim to 
keep it from rocking on the barrel. The quantity wished of 
cheap flour is placed in the funnel, and washed through the 
sieve-like wire gauze by water poured in; thus the flour 
is finely divided and diffused in the water, and the Paris-green 
subsequently added and washed down in the same way by 
addition of the rest of the water until the barrel is full. 
In application of Paris-green sprayings, it must alivays he 
borne in mind that, whatever hind of engine or spraying machine 
is used, the mixture must he kept an even strength throughout, 
and no sediment allowed to form at the bottom , or damage 
to leafage is sure to happen. 
