THE m CHRONICLE AND AGRICULTURAL GAZETTE. 
[Avevsr 27, 1864, 
maintained 
The is one of ordina ary construction ; 
Pe rafters y" boat EA wish three light iron sash- 
between. I may here remark, I Feier the 
com 
f | there is one point on which great soe is — 
by any one who adopts double-roofed how Fron 
the uniformity of , tempera ature, and dia e consequent 
f moisture, very m moderate waterings 
bars pr 
pe^ we wood a nd iron to —«— — 2 
ron has pleas: 
and syringes are sufficient to keep the arri in her a 
A beginner will be very apt to overdo MY Fer 
———— 
dies which is bmi banished from 
, though i itiss a bearer, and i 
Rom 
ithout run ning thro 
A very light syringing each morning ins 
Wooden dede 4, 5, or 6 foot ' go brea e 
uniformity inito spaces, ajda are p 1 
venience by r gare to b t 
eek in spring and anttiitb, e one 
whenever wanted. poi 
on the 
every week or 10 days in winter. 
"The is 
it is put in about 1 inch eB oe: sid e ‘the * My large plant-ho is ut 13 long, 
rafter, so that the rafter | being about 6 inches in pA 19 wide, and 11 high. It had shelves at either side 
5 inches of it are outside. Now, on these rafters the |3 feet wide, then paths of equal width, and a central 
eger roof re sts—s ve» git sashes 4 fe et wide—and | stand 7 fi wides beneath es side shelves 
ving, in two lengths. They} there we o 4-inch flow pipe two returns, 
ate glazed with the “ame M as the pes a are | 12 pipes in al When I double-toofed it, the heat was | 
fixed in their places by a screw bolt, as o be too muc a low brick wall on either side, 
us the inner. an 
remo ved when required. 
Shinkk ‘at 
distance i$ important ; anything from 4 to 6 incl 
will do; but what is all important is, that thé outer 
sehe shouk d dit. welt as to admit of no circulation 
| on it the plants stand—on à hotbe A 
delight in it. I think any one ong over up all 
his heating power in this way will soon find that it is 
| Superior to Debts A de "T" - 80 if belug #8 diffused | 
ie disea se, which is eaused m little e 
, Oidium bie inne appears VA 
0 A whieh are 
atta 
near 
ag 
will be found to be traversed b y miii d 
thik y t bràn ched threads, T ii 
ndition ear a co 
watered. 
“ The Ps gis and advantage of spend roofed 
yentilation, er Ws 
be ip^ ae oth 
i to. "MpMfttire, My Fern-house ped 
60 feet ^y 48, with a - ing height of about 16 fee 
446, 
pr ogress of “the dis 
spot increases in diam 
houses y be summed up thus :—G 
heating pets and great ünifuemity o 
of 
empera ture 
contains eubie of space; 
5 
lants in iie health. and bea 
of t 
and mo oisture ; jan nd consequently zemierkab o. x MÀ in| g 
So far | and 
by 
roun is tufts 
p 
a pair of 4-inch Voter pipes running round it, t 
heating power is r abou 
| it for some — 
n have no hesitation in reco 
I 
My gran is that I gain 
t E 
M or 15? of hea t from the do Ww roof. - Res M 
three or four nights of s 
f 
62° P to 48°, and probably 38 36 honrs 
EN 
of any tarpon of lant: 
Wha — then, to the reri ar 
i ain 
"tes dum 
in, E think, about s six hours, 
With a — roof this would ~ expected 
It is $ paren: mfork $ 
ha 
or RSE in the depth vs winter for a whole nig di 
its contents would suffer no damage. ‘The rev 
are equally termine —the very slow increase 
hot 
eects 
of heat in warm weather. This has been a 
rse | is going on, o 
Which. too often reduces the atmo: sphere uch a 
as 
m to ra person for the cultivation ki n 
S 
At 
either drops of if t 
soy 
cold bright nights e à and | the 
2 
th 
summer, at 
‘Tam aware of gone up to 70°; with a single roof add 
the same amount of ventilation, the house would run up 
jor g. 
fact, and one of great | E 
mere diem of |; 
Y ciation is unkno 
which, under the cir 
the ount of Schm 
cording as we 
dày and night. This arises 
nea n PERRE heat pronn the roof. Thus, 
e native Ferns and other t 
LII Oo 
importance in plant-growing : “there i is a steady uniform 
t. ——— h se accordi 
while I pore 
zs s away charge 
of moisture 
remove : nder plants 
onge we 
from near the glass in ete eee the nearer I|; 
This is 
= to it, the war they are. is is 
indicated by the little cr sana Ficus and | 
clinging to the under side of the inner 
sp! in tan it, apparently in great enjoy- | 
que 
| Heating: esae atus. is the grati 
e fli 
being di. scii, neither the sin nor the. atmo- | Tom 
fication of seeing the € bay a and healthy, 
spe 
ER i Iu 
important result takes plac 
** Anoth rom the 
non-radition of heat ‘ioe the roof.. 
e fro 
"T ordinar nary 
o 
Wa 
a double ola 
an do so, to try | ¢ 
ad house) and we venam a strong per- 
PR med 
nein matter how freely we use the | 
the _ evening, we find the house dry in the morning, 
ill be repeated by the 
erection of Are, and another till perhaps single t 
roof, and running off when thus con he 
mir havi h its moisture in the 
roofs have altogether disappeared. We should 
partioularly like to know peer: of the effe et 
fing in 
it ma ^: asked, is to £a earance us, or remain 
system of. double” glazing? Muc A WY ore, | LA to ‘othe 1 tree allied snd wr inkled liba 
v every way. ere is "question ys t of lar arge mouldy French Plum, but with a tinge of 
pl all, a great saving of fuel, the heat orange orate than: of purple In this condition 
within not being m is ipated s it is | the greater part of the s sugar. has vanis ished, the 
from an ordinary glass roof, does not need inces- |, 14 havingin 
sant renewal to the same extent as usual ie Whe ther this mould ië merely a uc of 
Bry EY'S experience is clea: pon this point, The ote perfect Fungus is pa fs rely unknown: 
the draining of the juices of plants which takes but hewn this = be, as the disease does not 
place in ciet cases by the condensation which | o. itse tile 
fruit- -bearing heads reak o 
flesh 
as the coriis does g the berries o 
oma 
he only frait which i 
We Mt 
Mr. 
9. 
— icots are not f 
present suffering from Fungus, 
recived die ugh the kindness of 
^ lr 
to 
figure o 
deners’ Chrono for 1856, to whi 
morning rident mel wi rises a little, i& becomes ia Sy E rie e ard ud P n M ye of Po spats’ alli tis’ spore zr 
absolutely dry, to the great of the plants, pao or a at eithe Nar xtremity. fe 
With the double roof, there is very little condensation | t° horticulture if he would ‘rooord his further | spores, more ds the walls which produce them 
on the root, the hituket of notremndneting ale beteracn p pese de along ae M such statistical gate as may xri 00 n the siie vò f little colourless. 
the two roofs of eventing if; and consequently, | be & tendrils. 
place on t ts tliomseitos, exact was frin Pith b att specimens o 
to into my Orchid-hoose, which doro ye repta Foner will egat of whi primes of 
hás & double ovs 8 c aed hiv qd onl in eather. True as this | cells mcn - two distinct bundles form a" 
seen the plants as beautifully covered with dew as a |is of the Tapt, sd iniiai, many of - porn exqu iuto object under the microscope. We 
~_ menu. de BOS. Pie ang me insignificant species s the c s quite | conceive that tin Bee Fungus had nothing to do 
g? the reverse with others, Every arie knows | with the dise but was an after 
that eas are more subje mildew in d e : Tora: SNR x determined that it is & 
han i apti. e. h a eraa condition of one of wo eom: ^ Pag a 
Hop mildew, and with many other sp of | Spheeria herbarum—a Fungus wl n 
Erysiphe which affect both wild and cultivated ifo ind tly p every Las of her- 
plants, In our driest corn fields, where not half) baceous plant, but even on heaps 
ow,|an inch of rain has fallen anes, oe atok May, | 
uring soveral of of t Oe eds as for sa datos 
Kuot 
that suffers, 
sve to attack 
i 
pera dene 
ty more 
than others, On the little’ ri 
Seaweed sejestod: by. the tides, M.J. "p. 
mmon | 
the 
g held a 
f 
T — e 
prominen © plate amongst the v 
eR uci iur effect in the E A oi abdo c 
t — 
bright orange-sca: pese t pem and its 
and this charac it holds, as we ast: 
evidence in an arm- Mi p its glorious Pues + spikes j af i 
| sent us fom ee ad of eae oe OURLL Lene 
| Great. Yarmouth. twithata: : 
which has latterly going ou inthe haan i 
respect to size and form, none of the ;e finer varieties of 
