Burlington weekly free press. [volume] (Burlington, Vt.) 1866-1928, 1888-11-30
vENrILAr1oN OF POULTRY HOUSES.
Discussion of the subject by Well Known
Poultry EHnoier.

Poultry EHnCier.
The article recently published in the
FREE PRESS under the caption Hints
about poultry hoUs es, more especially that
part of it relating to ventilation is damet-
really opposed to the more generally &C
ceDted theories on the subject, and the
most approved practices. | trust brief
discussion of the principles involved may
not be altogether without profit to those
interest ed in the subject.
After brief general alusion to prevail
ing errors the writer says Neither should
any holes be made near the ground or
anything done to create d draught up
wards, as when this occurs there is great
danger of the fowls having to roost mid
way between two openings = The
plan OF forming a small chamber in the
roof OF the house and inserting ventilating
traps at each end of this chamber will be
found good one"
A "draught upwards" in a poultry
house resulting from holes near the ground
is an imaginary absurdty. That an up
ward draft may be created by the aid of
powerful machinery or by sundry other
means may not be denied, but there is ab-
solutely no sufficient influence in any
poultry house to create it. 1t would be
Just rs reasonable to expect stone or Il
bullet - float in a pail of water rs to eX
uect the air entering poultry house
through hole near the ground to form Il
drauGht upwards. OF course If there is a
tlue in or near the ceiling through which
The air may pass out the lntlowing heavier
air Will buoy up that which has become
more or less rarllied by the heat of the oc-
cupants OF the house, and will create a
draught through 1t as much stronger than
any which can exist in he house, rs the
y q I'm
Is to say In a house 10 get square, hav-
ing inch ventilating tlue in the ceiling
the column Of air above the hole must rlst.
Learly 400 inches, while the body of air
within the mouse rises but |. But 1t may
be objected that the air in the house does
not rise in body, and the objection may
be valid when other influences beside that
of The intiowng cold air are In operation.
I'ut those Influences have uothing to dc
with this question
bu tho Ice III or near the ceiling is not
necessary to secure pure and wholesome
air III poultry house. II is an object in
Ventllatlng such houses to ecOnomlze to
the tulIel possible extent the heat gener
ated bN heir occupants and ii the air j.
permitted TO flow away from that part OF
he house II lakes all the heat with it ae
tast as it is given of, and for this reason it
S much better thAt he impure air should
/ TO turned INTO long vertical tlue quite
near to the ground The harmful gases
which 1t Is the object Of ventilation &C
carry away are dliiused through every
part OF the house alike, and it does not
make any difference at what level the
eduction fue is placed, provided a sniff
Clent draft can be muintaincd within it.
ave never seen any difficulty in that re-
gard when tue fiue is placed within the
house SO as to be warmed upon the outside
by the heat OF the house and extended q
ew feet above the roof.
one OF the best ventilated poultry
houses Of which | have knowledge is as
nearly ar tigl 8 1t can well be MADE
with fresh AIR openings near the ground
and eight feet below he ceiling at one
end, ana the eduCtlCD, or fou air tlue
20 feet away at the other eud, opening into
Il warm and well ventilated COW stable on
+ level with the floor bur about two feet
hiGher than the ground III the hen house
be AIT in the fowl house is always warm
| and VIII lesome, and its 80 occupants are
! happy, healthy and productive. When
III the doors OF both apartments are
closed, which they rarely are except in eX
IRENE weather, the draucht of air through
/ be tlue between Them is strong enough tC
blow out any Ordinary lamp or candle. \
| cunning match Is instantly eXtinguished
In this house there are no draughts anC
no accumulation of font gases or odOrs
The pre- cess OF ventilation IS uniform anC
effective. 1t may be 'improyed,' tut
now 1t can Ter accomplish It's purpose
| cannot understand.
But the plan recommended as gOoC
one 10 prevent dangerous draught is ~
certain TO produce them rs stone is t.
tall to the ground when no longer sup
ported. The chamber in the roof with E
u ventiating trap in each end of course al
/ mits the cold air through one of the TRAP
ana permits the escaLe of the warm all
| through the other, The cold air passes
down through the trap into the hous,
and being heavier than the inside air fall.
/ in a strong draught 10 the ground to h,
/ difiused over the entire floor where il eX
erts precisely the same influence as if i
/ had come III through one of the condemn
/ ed holes, except that as 1t passes dow
/ through the ar in tue house 1t throws tbt
/ uprising air INTO a narrow aunular curren
All around il, and actually establishes tut
1 deprecated 'draught upwards" Instead
of one draught there are two-the down
ward dranght of the incoming air and tn,
counter .draught produced by it in thu
warm air. o. S B.