260 TH 
E GARDENERS’ 
CHRONICLE. 
[N° 17. 
that they may be 80 contrived as in a great measure to 
aig we perceive is principally that radiated from the | 
fire, and counter- radiated from the walls. All tha to 
sufficient to overcome Se ae of ee ment. Those 
s detained in rae with 
posetece 
be 
should be p 
like. an 8 air-pum repre- | 
eans of ame yf Small 
tube 
much ek this primary, natural, and agreeable source of 
eating. 
therefore, 
open-throated chimney) in 
senting the area of the ok ond ane on ot the = | temperature. hea So rsa from enforcing a prolon ns contact 
corresponding with the length of the stroke. Ir Air-heat, on —_ contrary, i is never, and never can be between the air and = source of eg it should be 
that nde’ made agreeab i : it i iS just pos- 
hole famil ld i F d ible that , by so doing, « an n intensely-heated Panes might 
mble, would, without some provision for diverting the of temperature. The ad for air-heati d the same effect on the air a: of m 
moderate temperature, with which the co tact al 
ere fortable place imaginable. This difficulty was, 
finding that an merging bason does not mend it, tae 
however, met, by inclosing ~ fire 
with the eon acked Ne lea 
ing a smal 
— and egri he we cS of the 
pre- 
poh for a proportionably longer period. The idea of en- 
anglin ng the air against the he ated surface is one of the 
and fo 
formed aes amon errr winter’ 8 A “side, a 
which the annexed sket tch represents s the  principl r 
e rathe 
sphere chemical age pro- 
consti ments of t r; when the truth is, as = believe, t fi 
that the evil partly in aig it i all; and if we may art : of oli tin: The , by si iba contact, eceirer 
s before stated — ts "yelative — causes it t¢ 
md, and this till it has 
the 
st oda t acquired more than an 
—— e or road sides ino. This arrange- Man, ty artical sources err heat ad aby clothing, and ani- | agreeable de; ° ved all ouble cases, therefore, 
t con homily i have th d kept | the a the convolutions, about whic 50-much inge- 
place uae recar like a huge stove, where, ue warm in any required degree; but if a | necessary and nuity b as been misemploye ed, are — injarions,» lta 
a air, by all mea 
are required te do. ently something like what have largest convenient jacket, freely e = 
me pa 
ity 
i 
Evi 
as been ran 4 ou rit the dscne, 
pert by the diseased, but by se 
cases, I believe, of even na turall 
and ea is re- 
_ There e no 
Arnott’s stoves have 
perhaps. 
the Pesan In a: Saat ponies many ra Dr 
of great propriety : 
Pera th hey 
» Which is 
an produces the caine: called sgn dctly muggy. 
Air is n n agreeable warmer, but is almost always 
caaaeenta ey — age che af ‘eat, 28 
east wind in 
use of the “flue-heat, th the coal of ‘the 
user, who may attach rae ames of en flue-pipe that he 
pleases. 
The commo arly period 
used for ae dg th still enter a sort of 
wa — 
open fire, consis d burnt upon the floor; and it 
wee 
is probable that a Judicluly placed open fire would Lt 
than the coolness, which offends ; 
nd perhaps, so 
So h 
perfectly as they accompli: ished that purpose, have been 
attention: no fire in an open grate can ‘be ae “a 
or eight hours as may be done with a well-constructed 
stove. It tis 70 be observ ed, on the other hand, that this 
| abandoned on account of the specific ill effects produced 
b te of dai ee Tomar het 
5 
“Et will be said perhaps. that th dd hill Yeraaks 
the rate of combustion ; and. as heat is to be prod ber 
oe ly 
f destroying fuel, a corresponding 
YW 
we experience on en ntering an warmed, ti 1 
Sa sunken apartment, ee - rom ay cold Bardowe 3 but 
to the cold walls, which re- 
wide sperture a the flue, 
turn little or — in exchange with the body. ly, and 
which produce well-kno sensation called s striking 
which ty Le nperianeh sink so low as to injure its 
contents P a great —_— by 
the old Belek Se because the large mass of heated 
matter they presented esieegee : "reservoir of Arid which 
very cond. 
much from that ‘external —. with which i 
The ai 
it is in 
e house for some hours 
after the fire had become saan The i ae 
very 
which becoming loftier as houses increased in height, ; and the fact of how much i is due to ha d the fa rther adva' wan of peed 5 sabe high a 
at last the means of exciting through t the apartments of | the Hi li y the cht inclined 
rapid movement), may be ascer- | to think that hea ted bi brickwork te ‘inden form i is the best 
tioned ta the benefits rea from their fires—‘‘ a wind,” bene “7 idee a _ in one of _ rooms, having a eh all the aay ne for those who do not choose to 
as it —— Sates iermed,* “* fit to turna mill.’’ This, | closed door as them till one is well warmed. If} incur the ex oping “that. which will form the 
as the of India d $ med, a ie uae subject, y 
bys first oft pa geen familiar to di ial in | water.—A. sage 
of the last 2 ag in 
which os frequently play a pro- |} 
mipent part. : 
or raves ae ‘the warmed Toom > will vail maintain 
MOLOGY. 
ces. To extend 
by the ‘old- Seteok grate and chim’ te it sho ald 
unders pee that of the whole quantity of air which p 
through 
be 
part, 
ity does nt in fact, ped — ugh the sei at e 
ws flue. between the top o and the under side of 
antel 
were endured. 
the analogy of 
, the walls of a chamber form 
th 
bi rg e-in neloted 
aw 
No. zw PEAR-TREE ches For 
more i Tall a a century. the Pea ees hav ve been ob- 
to go > fal rther, they are the 
store corr radiates inwards w upon the occupan 
m jackets are — te radiate outwards ; and the 
t leas 
and for 
es hte unusually ‘abject 
at leat in nthe ‘eghbourhood of the me- 
0 general pr n the Royal 
he Horti cal 
e 
to this eonpe 
ervole s 3 and it paar: 
Gar at Ke Ws | last season in thes 
1 thet of + 1 
~ 
or charcoal-dishes, for which we are required to 
oon ote within dhe jacket, but within oe wes 
_ The essential distinctions between a 
cand an open 
as if it had been sighaa and blistered by hot cinders ; ; 
ye 
at first done by very inartificial con- 
st: That the primary radiation from the fuel of the 
tove is site 8 by the s surface of its case, aie 
et so limited i is the mile of the eaten of insects 
appearance 
being concen ie ae ps of water sanding 2a hg the 
leaves and I am not aware that any figures 
s small 
that of the grate is received by the whole surface of th 
ent. 
2d. That as air is warmed by contact only, it can never 
nevertheless, be "admitted, that the most 
as is derived from the more highly-heated surfaces of the 
sto 
3d. ‘That the stove-heated room, which would, on lena 
account, seem 
> deter Mr. Knight has discussed the oaiaject in = 
Hiertie oars hipaa ctions. 
di r of i called 
= « Miners,” from the caterpillars feeding oat on on ths pulp 
ie te of leaves, leavlg aie two cuticles un- 
touched, then the tortuous galleries within change 
last accoun to demand a better ventilation, ~ ts 
tance th 
ho diminished by the circams: mo 
air than is required fo combustion 
caller oniicalith be allow wed to pass into the- 
fue ape the fire. Bat the degree in which this takes 
air passes in chimney bat what passes throug! ys the 
fuel, and is required fi — com mbus stion m5 and frequently even 
as in the leaves of the Turnip, Vine, and. Primrose 
peg those of the Rose, Cineraria, and pare must be 
familiar to most fo of Me Itis rather + Femar able th = 
less than a this, as is 
ae al th 
‘LI. L 
ip the iain fuel; yr aoe a the benefi 
rom the moderate ventilation effect by a register grate 
is totally forgotten, except by the publig, who have, with 
benefit arising 
This suppression te aihaienan the admi 
but just sufficient to consume the fuel — ie vie 
height of economy, if it could be obtained without 
e propensity. The cat 
seme a, instead rs a sindbie 
rm 
& S 
thi. a ee 
pier aaenreaienr pedis 
Li innzus, Tinea Clerckélla. ey wl 
open fire in favour of the close stove, and have de 
lined to be made  disagreeably ~ even at the very 
es offered in the advertisement: 
There 
1 
f 
i 
few exceptions, 
t 
¢ 
pric 
heapness, sto tove: possesses y ag 
over the sr ana register grate. I pte only of 
ot tall 
exists a wee sa that the ai 
through and above en. fire pit i not coy 
as it cools those Spon sees be ier some ar 
stove is 
— public tae whose doors are frequently 
rf 
because it is 
i ge 
the heat emanating from the sag it x 
unwarmed airy con if | excited by the 
wall 
‘pomeefal | 
two 
ide, which had en- 
alice S- 
he heat. go up t 
The cold air, as 
from the radiant 
ie leaving the questions of temperature and economy 
| tirely eaten up p the Lien oem _and on coin ae out = 
te consider the the physi iological effects of stove-heat, i 
tite 
eat 
pick up from the comes in con 
tact, it enters the chimney as cooly a ssit entered the roo 
| Sequences produced upon animals, and those which are 
n¥ respects, 
The state of the air, as az 
7 before 
| likely to be produced on vegetables. In man 
diti f their atmo- 
th 
uae pcr 
Tt alo 
warmth, unless it be i in: 
— A 
¢ warming the ota declig 
utely chilled rep egg tea we 
cence therefore, statement that. | 
» forms a a. | Pp 
cig 
spl 7 } ? 
es 
b th 
the head is ofa black 
tro 
: asec? ae Srneage found to cea the effects of stove- 
fom at in other instances. If any ware so be empored 
‘that is doubtless the best in which the heated air 
iu Neural ans eames that its its acqeuel tesltge 
pe rust colour ‘the — “ops thoracic _segment B 
aa ee napa ain 
is 
ace: eiheinial (Oe; 3 highly 
magnified). These larvee came daily oat of the leaves, bat 
