Aprit 8.] 
THE vaste Dd he 
CHRONICLE. 
211 
sigs 27 SDR oo SOCIETY herd LONDON. 
aecident recently per- 
mitted me to make : :—On a clear anole March warps 4 
with an external aware S of 26° 
converting it into steam, as may be easily proved by the 
chewing of t Hydraulics. ” This unfortunate prediction was 
f the i 
of the eal exhibitions, at the option of the visitor.—. "Anl appli- 
cation x tickets must be made at the Society’s Office, 21, Re- 
t str one 
The Gardeners’ CHronicie. 
SATURDAY, APRIL 3, 1841. 
MEETINGS IN_THE MSURNG ae 
Monday... =. +. Entomological . 87M, 
Horticultural. - . . i 3 P.M. 
Tuesday - - +++ Flor’ ar a rasa ke 6PM. 
Linnean . «2 ee 3 P.M. 
Wednesday 0 et a ee 
Or the sights which may be enjoyed in London 
without being paid for, one “Of the leas’ 
¢ known and 
most interesting is the delightful collection of 
aquatic birds on the lake in St. James’s Par a is 
pla nts of the nei rh for 
th bou 
the sake of feeding the wild-fowl ae eos of teal 
and any thin g more beau tiful than e birds whi ch 
plese can hers be w: 
eae flocks 
best specie 
Chi 
The water speedily 
of the most rare an 
base manner ; that is ¢ O say, cht 
r less, let 
is in by some called the 
the air in a chamber | 
ceale: dh t-water Pipes, acti ing Epo 
robably sense of difficulty under such un- 
eisnentne ction 
hot-water System 
motion. The impression on ee such a house will 
e wrong cause. In his 
published i in the Horticultural say 's Transactions, the 
sg that of great and op 
+ ¢ 
it prot a ly indicate Pp e or 
little more than 55°. be hoon lear b bright day, be- 
f water, produced te expansion, i t 
whereas the moving cau use is lore was whickt te 
change 
a3 
moreor: 
a vr proportion of open « ih dowss pea sashes. . The sensation 
of ich es produce the effect by a 
Pore a prwnaecb sett of the doctrine of Hy- 
rau lies. 
tiga the ‘tedy, 9 4 = pore “coolness and freshness to 
the lungs ; the vi 
producing in ‘pits “of the sun’s rays, w 
bien ake roof, a very mgt tel and together 
pre warmth rhe 
i 
au 
YS 
& 
a 
ey 
oF 
r 
3 
3 
da, 
4 
ao 
= 
I age aes 9 to —— nstances to s — me 
in from "reds dictum on the ees 
imnpeibean question Ps ‘radian air-carried heat ; and 
Mr. 
especially as this, like all " Tredgel S works, esi 
with 4 Link of 
expetitieal in the ; yet a thert f heng | on 
within the qe in the ‘shade and in the aon will 
pera hot t les 
m groundless assumptio 
_ im the recent treat of ‘Mr. H d, all the reasonings are 
pe hese ale cut a temperature of s than 75° 
milar idea of the value of atmospheric 
80° degree: rig ae fel 
half su ffocated a w hours previously. 
If this le be. correct, it went seem that either 
+ contact with 
the piaat in a given time is made the basis of all the cal- 
culations, and no notice taken of that heat which may be 
much 
thermom very 
indicators of temperature. z ae fact is, I ‘believe, that | 
e bo 
diated plants, subject to a very m 
smaller amount of oe and, what i is of ap onnuaeel ence, 
th sufficiently correct with proper ex xplanation 
« nitateke in regar ‘6 
ways assuming that w 
the ai 
: m 
state of the balance nadie its ow radiation id that 
as the transmitter of hea 
a ae 
by the tem ore wy iH velocity rj the 
air. In a tolera BY dite et stmocphere I believe that its 
effect Aas 3g the therm ometer is exceedingly small; while 
Turning toa still more i donde work on the same subject 
—that of Mr. Richardson—he evidently entertains opinions 
similar to those of Mr. Tredgold on the subject of radiant 
heat ; for, in-speaking of the various warm- systems, 
he says, “ It may be necessary to proche: that the atmo- 
spheric | air, under all these various ci mstances, is made 
f 
e calection 1 is 
impression upon the lungs before 
can produce owt. effect upon 
he per Ah hence the art but not con pric tory 
poche tes. Ta of 0 opin 
The e svalved in all these statements, if, as I et 
ceive, there 0 one, is, it must be persia very general. 
There in which the 
pcepirs 
I much below, while hie 
= 
ed by private individual 
eel ‘Sere rd Letidos, rag which his Royal 
Highness rinee Albert tis t the pa atron. ay Aas t they 
can < nce ly e exhibi- 
= od paying their ‘cower vt ar scan ety. We 
thakivig this iow 
eee, el the utility of the sg wi Ppaeied b 
de oe n the amount of i its fi we mun objects 
so eo mately co: ae wl e decoration =i 
poet as to be  esce ts wii the lim 
of our wee There are many persons who are anx- 
ious that the lower ae of L 
i s to devise the 
best means of securi isend. T ithological 
Society meets the views of such philanthropists in th 
t unobjecti m , 
est sup! 
us e Society may be had at the very 
am emen 
= coming Bok of the Society can kg their 
We have received the following sums 
deners’ Benevolent Institution :— 
Thomas Harris, Esq., Kingsbury, (annual) . . 2, 98. 
Mr. J. Whiting, The Deepdene, (do.). 9. . 1h us. 
on account of the Gar- 
ON THE a ebeae coe DISTRIBUTION, AND 
PRESERVATION OF HEAT, WITH REFER- 
ENCE PARTI TICULARLY TO THE Fo ged pec 
OF CLIMAT TE in Si Mane cg 
times, will at firs phe perh: 
appear very much tke truism ; else wherefo: 
be said, do we build ake s? I believ 
ely of warming the air contained in an apartment as 
nipera 
in the fey gave a seperate greatly exceeding, 
that 
ly littl 2 attention i is given to that which 
- 
1 ‘ae 3s 
@lcurac 
the two positions ; while bot! I think, ute iy fle d to indi ely she fadlettic Yea sou r, walls, ceiling, an 
te the relative heat-prod bec , of ite t which has been previously nulla 
th ds of Profs Daniell, 7 * there can ‘ little ine to et fro: 
th 
portant 
inineaee we many of the processes of vegetation.” 
In sayi is, I do not refer to the diff 
m 
Tom some thee or other, ‘the term radiant hea 
to have barn limited to the case of the sun a ny 8 bright 
oor and artical ge - entirely to the difference be- 
n rgdian ta rrie of heat, Whatever be the 
to pice S Aelsse ee seg 
jon "ati inferior tempera ee redgold i in- 
deed sa mt ‘9 ‘be ‘Rot Bae isttending t se while the tempe- 
This has 
is en singularly pi hy and which in regard to con- 
seryatories is, I think, of very great importance both 
soonapeiraly and physdlogic ally. 
This neglect may be in 
+h 
most at con site 
arisen, I pPpebend, partly f se fang at s effects too 
tarp by our perso 1 feelings. Evetyin dy has ex- 
per cee’ tieibe tr les the disastrous effects oF ae 
Tl 
great m 
ale ue ascendancy given to the calpain peated of | 
r John Leslie ; which abounding in false conclusions, 
pulses, 
ill-fitting door or window. But the haps 80 pod 3 
is in very rye degree one of a rature, as may be 
easily proy pror ed by taking a ae ht 
. n nly for example his notion of fri | 
have nevertheless been published in re; ons, | cor f the room, holdin it full im the current of air, 
n to last, e Encyclopedia. Britannica, ba ing h wo hata snd how slowly produced is the 
d have in various other forms been kept before the | pint depteimion the mercury. ‘such 
public, to the exclusion of the much better works of | a sar vel a! fess the skin is a iS apecits eters, Raving re- 
Professor Daniell and his : predecessors. fere organisation, and might probably be nat 
nished ty mparting to the air any quantity of heat. 
concluding words of Sir John’s article on ~4 ew, a pe The ce is, that animals are not made to live in cial 
of great importance to Horticulturist, a ogy had | currents of air, whether feat be hot or oat and it isa 
me gi exhausted by Dr. Wells, in one o in genial to the 
slams essays in the 2, ib bjecti 
“It might, perhaps, (says Sir John,) have been Judged which wil be noheed in heir Ansel pic 
sufficient if Dr. Wells had contented himself with ass though I have stated that in uisitions upo: 
: pe- | war » the temperature of th carefully consi- 
rimental fact, At any rat e cannot help reg retting ti 4 do not think that ees * comet estimated, for 
nomenon from the very loose, cumbrous, ater | 
pothesis of M. Atel By ey Genera, com what is 
gratuitously called r radiant heat 
nor personal toe aed corpses dications of its tem- 
perature. We coneaal of os the on ig 
* 8a 
ciples pe poand philosophy should, at ‘this time, | have pro- 
ured ai 
oat of the det nrc pe go tgphallee nA 
ration whish the multitude are prone to entertain for 
whatever lulls the r reasoning faculty, and appears cloudy 
ieeaealy 
sheltered fg Poa radiation of terrestrial 
error of the inference which ascribes rgpines ty 
metrical indication to the air, is proved (especially yg ecm 
houses? e however that | and mysterious 2 senion sky) bi unding the with a polished 
so far from ng this appellation, their importanc gps thus boldl: idly assailed i is, yoy One } cup, o peli: to the ae the heavens. 
has never been recognised by the worl , and not | of the most satisfactory and unquestionable the whole | The arr remains unchanged, yet the thermometer sinks 
in its fallest extent by the learned author him: range of physical theory ; and though egrees. The arrenpemens tues Soren; ead Ng sq 
sieit £ rising, since we “have for +} Was one of the ingenious suggestions 0: 
above half a century the practical public it wou ald appar to hare ost Wollaston Fig Shins a sothe seeslled the 
investigations of Pictet and Prevost on radiant heat, and ee ee ee in oblivion. pre ie ppd Poe 3 in 
for half that awe of the _ utiful application of — The late Mr. Tredgold oe it is well known, consi- | reference to such consi gas the present, has been 
inquiries made by Dr. Wells, r with the usefu' te ith which ia as 
experiments of Sir John Leslie on radisti su = 
while more last link has dded to the 
chain, in the extremely delicate observ of M 
on Diather: the permeating power of radiant 
t at varior us temperatures through a great variety 0 of | b 
substances. 
It may be observed a: all the labours of the = 
phos | just referre d to ar n_ the subject of 
indeed | of mathematical ‘treatment; while nearly - 7 
discuss the pn ist - ine 
of air, 
air, cree seek to produce by means 
—— — effects which in nature ar 
Se ea re 
heat and radiant heat would be rendered very obvious 
e ine! 
net been show gig 
quiet atmosphere in latitudes closely nse 
pores 
he trifling ie 
les. 
The 
