Rocky Mountain husbandman. [volume] (Diamond City, Mont.) 1875-1943, 1882-06-29

will be nipped in The bud. The eggs, from
their bright color and being in clusters, can
be readily seen and removed by turning up
the foliage with Il pole or hoe-handle, and
pinching off the leaves bearing clusters of
eggs.
Experience and q sad one-has taught
that the most satisfactory method of Destroy
ing the potato pest is by applying poison to
the vines. Paris green has served well in
this capacity for a number of years. 1t is
an arsenite of copper, a deadly poison, and
well adapted as an insectcide. The meth
ods of using the Paris green are numerous,
but are naturally divided into the dry and
the wet application. When used in the dry
state it needs to be mixed with from thirty
to fifty times its bulk of -four or plaster.
The dusting should be done when the dew
is on, or just after a rain, that the poison
may be held by the wet leaves. The num-
Der of busters and sift1rs that have been de-
yised is large, some patented and others
not.
The wet method Of applying the green
is preferred by some growers. The poison
is mixed with water, Que tablespoonful to a
ten-qpart pail Of water. The powder is not
soluble in water, but simply mixes in it. and
quickly settles to the bottom of the vessel,
unless the water is frequently stirred. A
large watering pot with a fine rose may be
used for sprinkling the poison. If the crop
is a large one, it will probably pay to have
one of to patent poison sprinklers or ''spray
machines" by means of which a large area
can be covered in short time.
The London purple is now much used as
poison tor the potato beetle. 1t is also an
arsenic compound, and it is by-product OF
''refuse'' left in the manufacture of dyes.
The Paris green is more costly, and on ac.
count of its expensiveness is much adultel-
ated. The London purple is, therefore, Of
more uniform quality. Its color and ease of
mixing with water also make it equal if not
superior to Paris green. Experience teaches
that the liquid mixture should consist of one
pound of the purple to a hundred gallons of
water. All that has been said as to the
methods of application OF Paris green apply
with equal force in case London Purple is
employed.
WORD OF CAUTION.
These two substances are deadly poisons,
and must be considered as such, and should
be used and preserved with the greatest
care. There is danger from inhaling the
dust when applied in the dry way. The
greatest care should be exercised in storing
the poison that it be put where it will be
out of harnN's way. ..-..... ......-.=
DR.. BYRON ID. HALsTED.
1.-THE greatest danger in the use OF Paris
green or London purple is while handling
these poisons in the pure state, when mix.
ing them with plaster or flour or water,
and unless separate, secure room can be
devoted to the mixing and storing, one
never feels safe while the .sstuff" is about
the place. "Hammond's Stud Shot" is tree
from this objection at least, as it is prepar-
ed ready for use, and, unless handled with
reckless carelessness, may be used without
danger. The extreme fineness of the plaster
used in its preparation add considerably TO
its fertiizing value. We have tried this
preparation rep eatedly during the past few
years, and We're so wtll pleased with it that
last summer we used it exclusively on ten
acres of potatoes. l-American Garden. ..