Evening journal., 1900-10-13

covering with cloths. blankets or can
vnss
The amount OF bisulphide TO be used
depends very largely upon the shape OF
tho space 10 be fumigated. II the grain
Is in approximately eubical form, the
above amounts win be sufficient, but n
spread out with but little depth two to
four q i've times as much will be found
necessary.
Timc 70 Fumigate-Infested grain Is
generally subjected TO the bsulphde
treatment for twcnty-four hours, but
may be exposed much longer without
harming Il FOR milling purposes II not
exposed for more than thirty-slx hours
its terminating power will be unimpaired.
In open cribs and badly infested building5
Il may sometimes be necessary 10 use a
double quantity ef the reagent and re-
peat treatment at intervals OF about six
weeks during the warmest weather.
When possible It Is always desirable 20
fan the grain Immediately after fumiga-
tion thus removing tbs dead insects. and
10 thoroughly clean the gronary before
realizing Il.
Mills and other buildings when found
20 be infested throughout may be thor
oughly fumigated and rid OF insects by a
liberal use OF the same chemical. A good
time Tor this work IS during daylight on
Saturday afternoon or early Sunday
morning. closing the doors and windows
as tightly as possible and observing the
prccautton OF statoning a watchman
without 10 prevent anyone from entering
Il Is best TO begin IN the lower story and
work upward 20 escape the settling gas
The building should then be thoroughly
aired and the grain stirred early Monday
morning.
For the fumleatlon OF q building or a
reasonably close room It Is customary TO
evaporate "a pound Of hisulphide for every
thousand feet OF cubic space. In COM
pnratlvely empty rooms, and In such as
do not admit Of being tightly closed, Two
or three times the above quantity OF the
chemical Is sometimes necessary.
Caution Certain precautions should
always be observed. The vapor OF BIZ
sulphide ia deadly to all forms OF animal
life n inhaled IN sufficient quantity; but
there Is no danger IN inhaling small
amount. The vapor is highly inhamma-
Bile. but with proper care that no fire u
any kind. as. for example a lighted ci-
gar. lantern. or Hight of any kind, be
brought into the vicinity until this fumes
have entirely passed away, no trouble
viii be experienced.
Cost.--Carbon hisulphide may DO OBJ
tained through any retail or wholesale
druggist IN cans OF various sizes. In con-
siderable quantities. Il may usually bo
obtained from wholesale houses ana man
ufacturers az from 70 10 cents per
pound, and IN smaller quantities from re-
tailers az Is or 20 cents
Note.-The entomologlst OF the Expert
ment Station IS interested to ascertain
how extensively carbon blsulphide IS be-
Ing used against grain insects and with
what success and viii be glad to hear
from parties who have had experience
with Il. He Is also desirous OF obtaining
specimens Of the insects found infestinp
grain, meal and cereal products from All
parts Of the state. SO that the Identity Of
our most common pests may be establish.
ed. seHd such insects with notes as C
the Injury done by them. alive IN grain Of
meal In wooden or tin boxes by mail Ad,
dress. Entomologist, Delaware Coliegl
Agricultural Experiment Station. New
ark, Del