( 7 ) 
Gt. St. Helen’s, London, E.G. Price 35s., packed and deli¬ 
vered in London, at any railway station. 
Another form of spraying machine is a barrel holding about 
36 gallons of water, fitted with powerful pump and two jets 
. and sprayers, and also automatic dashers for keeping the 
fluid properly mixed. The pumps will draw to a height of 
thirty to forty feet. 
“ The barrel is of course mounted on wheels, and has a 
pump fixed to the rear with two delivery pipes, to which are 
attached whatever length of tubing (india rubber) may be 
necessary. Three men go with the apparatus, two men to 
spray, and one to pump.” Under ordinary circumstances of 
wind, this machine will spray 3000 trees in a day. The 
manufacturers are Messrs. Boulton & Paul, Rose Lane Works, 
Norwich. The price ^£8 15s. 
The Strawsonizer is another form of sprayer that, where 
fitted for vertical delivery, may be expected to be exceedingly 
useful. Information as to different forms of this “ air drill,” 
for throwing fluid or dust dressings, would be procurable from 
the manufacturers, Messrs. R. Hornsby & Sons, Spittlegate 
Iron Works, Grantham. 
In mentioning the above forms of sprayers, I in no way 
wish to infer that any kind is better than another, so long as 
it meets the essential requirements ; but I am aware of the 
two first-named being successfully used. An ordinary garden 
engine can be made to serve the purpose, but this method 
involves great loss of material from quite unnecessary quantity 
of fluid spread abroad, and also great risk of over-application 
to the leafage.* 
Paris-green, or Emerald-green as it is frequently called, is 
procurable at small cost. Probably retail traders would not 
furnish the pure article under Is. 6d. to Is. 3d. per lb. 
according to quantity; but Messrs. Blundell, Spence & Co. 
(Limited), of Hull, and 9 Upper Thames Street, London, 
Color Manufacturers and Exporters, with whom I have had 
much correspondence on the subject, inform me that they 
would deliver quantities of 14 lbs. and upwards carriage paid 
at Is. per lb. packed in 1 lb. paper parcels, or in the paste 
state in large glass jars of 4 and 7 lbs. at the same price, 
jars free. 
The Paris-green is also procurable from Messrs. Hemingway 
& Co., of 60, Mark Lane, London, E.C., and doubtless from 
many other good and reliable firms. 
* Wherever any variation is made in form in which the Paris-green is pro¬ 
cured, experiment as to strength of application safe to leafage should always 
be made before use on a large scale. 
