PARIS-GREEN. 7S 



dew, but it sliould not be allowed to run down and drip. As soon as 

 dripping begins spraying should cease. 



" It should on no account whatever be thrown so as to ' swill ' or 

 ' souse ' the trees, and run off the leaves in drops or streams ; this is 

 bad practice in every way. It uses a great deal more of the chemical 

 than is needed ; the leaves get little but pure water at their highest 

 part, and much too strong application where the fluid has settled at 

 the tips ; and also a drip is caused on to the ground beneath, which 

 may render the grass temporarily poisonous, 



" Also, spraying should not be done whilst the trees are in blossom, 

 and warning is also given in the American works that sprayings should 

 not be given in rapid succession. Several days, it is advised, should 

 elapse between, unless, of course, as may easily happen in difficulties 

 of first experiments, the spray was manifestly so weak that the previous 

 application counted for nothing. The effect of the Paris-green on the 

 caterpillars does not always show directly, and it is undesirable to 

 waste labour and material where the work is already done, and only 

 requires a day or two to show it." 



The above difficulties, it will be seen, are what are most carefully 

 pointed out in the " Directions," as the details regarding which care 

 must be taken to ensure success, and the requisite points to the end are 

 most fully laid down in my own short pamphlet on the application of 

 Paris-green, from which I have given the extracts of directions. I am 

 only happy to send to any applicant who wishes for it for practical 

 orchard or fruit-growing purposes, or it is procurable per dozen or 

 hundred from my publishers.* 



To the above extracts I add the following with regard to the care 

 which, with this arsenite of copper, as well as with all other poisonous 

 preparations applied in farm or orchard service, must be exercised in 

 its use : — 



DIRECTIONS. — " The cautions to be observed in the use of Paris- 

 green are : — The bags should be labelled Poison and kept locked up, 

 and especially kept safely out of the way of children, who might be 

 attracted by the beautiful green colour of the powder. 



" Workers with the powder should not allow it to settle in any sore 

 or crack in the skin of the hands, nor stir it about unnecessarily with 

 the hands ; and they should be very careful not to breathe in the powdei- 

 through mouth or nose whilst measuring or mixing it ; and stock and 

 other animals should never be allowed to jJasture or feed under trees that are 



* ' Paris-green or Emerald-green : its uses, and methods for its application as a 

 means of destruction of Orchard Moth Caterpillars.' Demy 8vo. Price Is. Cd. per 

 doz. ; 8s. 6d. per 100. Published by Messrs. Simpkin & Co., Stationers' Hall Court, 

 London, E.G. 



