545 THE GARDENERS’ CHRONICLE. [Aveust 16, 1856. 
g re alarmed lest their meadows should be |11, —ON THE DIRECT EFFECTS OF THE SUN’S 
ined. H t was soon ascertained to be nothing more | RAYS AND OF EXPOSURE UPON PLANTS. 
A peep within the cottage does not diminish the | than a Conferva At ter which had formed wit a m APH. Dz C 
desire to know from what hidden sources all this| great rapidity he meadows in question were | N.B, The tempera atures variably expressed in sean of 
floral pg ace is derived ; for in the drawing room | inundated, and went on growing as long as the soil Fanrenheit’s rer except za otherwise stated, and 
Orchids and tropical F erns, and in the | continued to be damp enough. As land d Pian usually exposed more or less complete] 
EEs room dishes of handsome | the Conferva panes and soon disappeared. fo the pat in rays, tad EAE “ pera y 
Pi and Grapes, which cannot ripen without | believe it was removed by harrows. (See our ia taken in the shade are hence ill adapted to e PER gree 
gie by the beginning of age ee sapeo ae for 1843, p. 7: phenomena of vi sequent ion. 
so much i acted soe learn from — Moniteur des Comices that the | M. de — to whom this objection appeared 
þr at a short distance. Passi me plant has n possession of the di y forcible on i remarks that Hu mboldt often insists 
path, bordered by plats rea e for thelr dood | pp e ately overwtalened by water. The oth pon tl of the 
, among Pa ch are = notable the | day M. Paven laid before the Central A Itural y in, andhe 
e-leay ches purple-leaved | Society of Paris Fo neg that he had received | has himself recorded obeervatoas | made „With ther- 
Châ éne ò mometers covered with 
Grass walk | 
beneath overarching trees, with quantities of “Peres 
on either side. _ From this you suddenly emerge 
to 
deposited 
raps on at Paris. Comparing these with othe rs taken 
at Mt. Pei po o It. 3000 feet) he con- 
removed 
rupestr re for the | pasturage of bees. Here, 
rich 
Firipi 0.883 Ra dry, 
that it “must make when 
of Sonim 
= roughly oer ground ; are two ort three glas: 
ae 
ark 
at rin 13° at Orange, and 2 20° at Mt. Peissenberg ; 
aud that ge sun’s rays raise the mean temperature : 
the year at Paris, 12° at ae 
nii e e adds th at these fi gures 
roofs, put pai: pa by some 
vta pi aem 
d hot 
fa ait, with heavy clums 
er. Nothing 
= their exterior. In nsi Are 
land he iiri it to be thrown in neste k and burnt. | 
Such Confervas are common everywhere, and con- 
the rain, dew, and a 
Similar very e Shared ons have been recorded 
at the Horti fen Society s gen at Chiswick. bs 
e covered w ack wool an 
tribute to, or -wha cause, the green filame ntous 
rend d 
i sade, rams arie e stages, and itie vir ae 
to keep a low span-roof from tumbling down. 
Under nth ~~ u er is in one house a Peach 
. trellis with 50 or 60 dozens of fruit, skilfully 
trained and ai fectly ripened ; in another a Ssv 
of Orchids in beautiful health, Scitamineous ay 
onds and similar places 
Wien aed: out or otherwise removed 
bone ade 
s well to recollect the advice give n n by 
will bed 
M, Pay 
Plants. 
181. Hooker, 
most and most — Lycopods, “glorion 
Ferns, and over all a canopy of ultless Sines: 
which would have bea ten Grain ENDINNING drone see p. wf 
had they contended with them. Heaps of Van 
RETE E pi endrums, one se ‘which (chishphordia} 
n blos Bromeliads, Onci- 
i of other Epiphytes 
Boa belong to 
e Gra 
a border T foot only deep, and Tittle i3 
New 
RHODODENDRON eaan 
Bot. Mag., t. 4930. 
pp beautiful plant had apaa a better 
eristic 5 
exposed to the sun A pr the aiaiai aheepts 
radiation, one similar] red 
oe to give the lowes 
eturn: 
ese cbservations been studied b. 
and the following are the results : 
of. Dove, 
ced 
Mean temp, in 
shade. 
iM ean dedu 
TO! 
lar, and min. INPP. 
nocturnal rad. 
Mean of a 
Winter 
n the 
| aendzon pe ike 
o it because tt is u 
of po prenent year flowers appeared i 
f the ee eae] 
ban pae pa 
Spring 
m max, s0- 
This i is rsh the an anobjcconble series of ob- 
M. Dov e quotes an other by 
house, and within it, so “that the roots are ae 
to chills or Sona Other cas 
Sth other uses i 
This i is the 
form which a aata hi raises 
the precious ore that is profusely scattered over the 
house and pleasure grounds. 
— After all the at e a to be asked of 
mere i is—do wer the 
purpose? It matters argh how they look, or i 
what ch manner ae Awe oe pro- 
vided they do the work c required of m. Norca 
there be a greater mistake than to pre at that in 
r to render a forcing house able it m 
can; but if it is merely required to do gardeners’ 
work it is of no consequence how rude its 
- construction i t its . It is only 
necessary to keep it out of sight. 
Let no one inqu here the cies of aa little 
sketch is t found. Some Others will 
— Suffice it to ayes s facts are more 
n, 
expose privacy to the invasion of ror curious, or 
even of the quthusiastic Enough indeed may be 
learned without a visit; and especially this—that 
results are sometimes in an invi 
“They 
of R. cinnabarinum var.? were aire tubular, | 
hemmaman not e blackened, kan at 7 a.M., 2 P.M, 
and 9 4.x, and at 35 feet above the surface of the 
eee ‘sid the ey kia neither give the maximum of 
solarradiation, nor minimum of terrestrial. Ther lg hag 
searlet with a yellow edge and interior, and _ being 
Fi 
ees and by ; Quetelet ; . but 
all are the same or to 
A ol bjections 
| 
S M. Dov: s that milar 
f observations nt ery of, ' kismiet 
y made in a continen Lag climai 
ihe s Gie would 
If by he m 
tremes between solar ani 
ose bet 
in the pairs his opinion se 
me open to doubt. The exces® 
of heat indicated by the thermo 
solar radiation arises; poses 
p for 
| sphere uniformly PAE Thus 
differe nees between the puri ity | of the | 
observations are however wanting upon t this is pula = 
ase it is be: = to be cautious. Under these 
cumstances I doubt 
3 
g 
a 
® 
ui 
oa 
=Ê 
aes 
+ 
o 
®© 
si 
F 
© 
Be 
tical importance is to know 
ore ‘ea auty 
Sih yi statnes anit 4 rraces and 
And this i mall cöreolatidit for 
ho imagine that effecte 
d 
st profit out of the fat 
t nae we a aiply to gardening. 
fordia, er plant was a ee bush, with lea 
like thos m; bu : its cone donee | 
quite co: We now | 
acted | upon by solar radiation i in the 
wine, 
empty or full of water, or quicksilver, or spirits of 
a A er free or diverett ’ with a black or a non:¢on- 
Eastern Nej here it is not 
tions of 10, Boo t to 12, _ oan both i in pra =r on 
It forms a slender 
fie on | 
appen, and was said to grow comity iai 
its 
n | that form in which the flowers are long, 
dulous, and deep searlet bordered with bright yellow. 
and I mean by isothermic lines those in; npa ae the 
leva- the baci 5 surface which have equal oe Sanai fines 
of time, in contradistinction having the same mea” 
| of H ambalat i brongt P 
annual temperature.— Note - D. C. icle from 
It teppet o s that the faet quoted in a pre ature of the il 
le | M. De Candolle’s work, namely that the temperattt® <; in itself 
| is in sa ay places nently above that of the rea of the 
ee soe the isothermic lines projected from obse: Tå from 
ir taken in the shade cannot coinci coincide with those d+ and ter- 
the e) een the extremes of observations of so aa i 
| restrial radiation — the anomaly there 
| direct result of radidtion, and ze 
| terrestrial.—Note by Translator. 
