The Rural Magazine, and Literary Evening Fire-Side, Vol. 1 No. 01 (1820)Various
History
The Rural Magazine, and Literary Evening Fire-Side, Vol. 1 No. 01 (1820)
Various
Agriculture; Agriculture -- Periodicals
The height of the chimney I believe to be a matter of no importance
to the draught, and that a low one will draw as well as a high
one. The worst smoking chimney that I ever saw was about 47 feet
high, in my own house: it smoked because it was too small, and was
cured by adding to it the flue of a fire-place directly above it;
on account of which I had to lose a fire-place on the 2d floor. In
this case the size of both chimneys was barely sufficient to vent
the smoke of the lower one. The height is a subject which I have
not investigated, but it strikes me that a low chimney is most
favourable to drawing well: if any one want an explanation on it, I
will give it again; but it cannot be of much practical importance.
The fashion of a fire-place is of no importance to the draught: it
may be made to please the fancy of the builder. I, however, should
prefer one something near count Rumford's plan. The throat of the
chimney may be contracted or not at pleasure; but for beauty and
advantage of heat, I should prefer having the back drawn forward and
the throat narrowed, more especially in a low fire-place. There may
be local contingent circumstances connected with chimneys, which
cause them to smoke, and must have appropriate remedies: but such do
not effect the general principles here laid down.
Smoke, from fires, is naturally carried upward by the heated air,
which is specifically lighter than the surrounding atmosphere, and
consequently ascends, carrying the smoke with it, and if it meet
with no resistance, will pass up the chimney; but if that be too
small to vent it, it regurgitates, as it were, into the apartment;
which can only be remedied on the principle heretofore laid down.
It might be asked, why will not a small chimney vent all the smoke
of a small fire, in a large fire-place? Two reasons may be assigned:
First, the heat of such fire cannot produce a brisk enough current
of rarified air to carry the smoke, and that which is heated, not
having free vent, it whirls in eddies into the apartment. Secondly,
smoke, in itself, is specifically heavier than atmospheric air;
consisting of aqueous vapour, carbonic acid, and oxid of carbon,
and coming in contact with air not much heated, and parting with a
portion of its own heat, it has then no disposition, in itself, to
ascend. But this would lead to a discussion foreign to my present
subject.
Yours, &c. N.
* * * * *
Samuel Sprigg, Esq. has been elected by the legislature, governor of
Maryland; and Thomas Mane Randolph governor of Virginia, in the room
of Mr. Preston, whose constitutional term of office has expired.
_List of the Members_
OF THE
S I X T E E N T H C O N G R E S S.
SENATE.
_New Hampshire._
David L. Morrill, terms end in 1823
John F. Parrott,[14] 1825
_Massachusetts._
Prentiss Mellen, 1821
Harrison G. Otis, 1823
_Rhode Island._
Public-domain text, read in full here on John Shaqi.
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