PARIS-GREEN. 
97 
English, and is the one used in most of our Colonies, India, and 
China; the second is the American term; the third only used in 
Germany and by German traders. 
“ Emerald or Paris-green is a double salt of arsenite and acetate of 
copper,—in other words, an aceto-arsenite of copper. You may take 
the U.S.A. analysis of Paris-green as correct. The pure article (which 
is that used as an insecticide) is a true crystal, and varies in colour, 
from a deep to a pale green, according to the size of the crystals.” 
Mr. Dixon also favoured me with the following percentage analysis 
of pure Emerald- or Paris-green. 
“Percentage composition of Emerald-green:— 
Per cent. 
Copper 
32.11 
Arsenic 
28.56 
Oxygen 
32.48 
Hydrogen . 
0.76 
Carbon 
6.09 
Total 
100.00 ’ 
Cautions to be observed in the use of Paris-green .—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 colour. 
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 powder 
through mouth or nose whilst measuring or mixing it. 
For this reason it is most desirable that purchasers of Paris-green 
should have it sent not in bulk, to be divided for use on receipt, but 
wrapped in single pound (or small) packages by the senders. I parti¬ 
cularly wish to draw attention to Mr. Dixon’s observations on this 
head, given in his replies to my enquiries :— 
“ In handling this article in the dry powder, care is required, as a 
light green dust arises which is breathed in, and produces unpleasant 
results; and in one instance, a customer who thought he could save 
money by buying it from us in bulk, putting it up himself in paper 
parcels, employed a man to weigh out and wrap about 5 cwt. in 1 lb. 
parcels. This cost the man his life; so as we are laid out for this business, 
sometimes wrapping 10 tons a week, we can really do it at much less cost. 
“We have never heard of any accident to users in America, and 
there is no danger when using it in water (i. e. from its flying about, 
Ed.), but you might advise any who wish to try dusting it on dry to 
carefully stand to windward.”—(E. Dixon (Director), Messrs. Blundell 
& Spence, Hull.)* 
* At present we especially advise that dry dusting should not be attempted as a 
remedy for caterpillar attack. We only advise fluid mixture. 
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