- Se nen ten ay ey 
‘GE GERD ESN CG. A meee 
- Sept. Regulations; it may be continued as long as 
~————-= required, and made to ceafe with the Oc- 
cafion. 
Thofe who have not this Advantage in their 
Greenhouies are to be warned againft a common 
Error, which is the Ufe of Charcoal: every 
one knows how fatal and fuffocating the Steam 
of burning Charcoal is in a clofe Place; and 
~no Place can be? clofer than a good Green- 
houfe fhut up in the cold Seafon. 
We have on many Occafions obferved how 
effential free and pure Air is to Plants; even as 
much as to Animals: Reafon may therefore in- 
form thofe Perfons who have thought of this Me- 
_ thod, that they muft greatly prejudice the Plants 
by it; indeed I have feen the Effect of the Char- 
coal more than once, more hurtful than the 
Froft would have been. 
The Branches of the feveral Trees have grown 
yellow, and droop’d at their Ends; the Leaves 
have fallen off from the Plants; and a great 
many have been deftroyed, while the Remain- 
der have been fo injured, that nothing but a 
Courfe of very good Management for the fuc- 
ceeding Year could reftore them. Therefore 
! 
E have now raifed our Greenhotfe from 
- the. Foundation and-Floor to the Roof. 
The Back and Sides are ftrong and clofe; and 
the Safhes fecure; but there yet remains a great 
Article, which is the covering the inner Surface 
of the Walls. 
Thefe are at prefent plain Brick, and it is 
the Cuftom to plaifter them in a rough Man- 
ner, or to wainfcot them cheap and “coal: 
There is nothing in which a little iiaeaks 
is fo ill faved. 
and Heat in the Day-time always accompany 
one another; and it is fit he know farther, 
that in order to fend back the Light and the 
Heat with it in the fulleft Manner, they fhould 
fall upon a perfectly fmooth white Surface, which 
reflects the moft, Light of any Colour; being 
indeed an Affemblage of them all: and that the 
Smoothnefs of the Surface returns them regu- 
larly. Wainfcot, though an expenfive Thing, 
is by no means proper, for the Heat and 
this defeats the Purpofe. 
The common Plaiftering and White-wafh are 
_ continually cracking and peeling; the Surface 
is always irregular at firft, and it foon de- 
Gays. oo bis are difagreeable in that it rubs 
off upon the Cloaths of thofe who go ins and 
upon the Plants. It is too much liable like 
the Wainfcot to the Effect of Heat and Moil- 
3 
s Let the ‘son ls tidied that Light. 
Moifture will make it fubject to warp; and 
thofe who have not the Advantage of Flues Sept. 
under the Floor of their Greenhoufe, fhould =~ 
remember that the firft’ Defence againft the 
Froft is lighting Candles ten, twelve, or more, 
according to the Extent of the Building: if 
this is infufficient, the next is to keep up a fmall 
mouldering Fire of Peat or Turf, whofe Steam is 
lobflienGves ; and if this be not enough, a Ger- 
man Stove fhould be brought i in, and placed near 
the Centre of the back Wall. 
Thofe who are to build them now, will find it 
much better to make Flues at once, than to truft 
to thefe uncertain and troublefome. Methods. 
The Expence is not great in making them; and 
as to Fuel, a very little ferves when they 
are wanted; and this is mot once in many 
Years. 
Thus much regarding the warming of a 
Greenhoufe we have been to led to fay in 
this Place, to fet before the Reader in its true | 
Light the Advantage of making Flues. Thefe - 
fhould be about twenty Inches deep, and eight 
broad; and in the Courfe we -have directed for. 
‘carrying them on, they will affect every Part 
of the Room. 
OPAL ER SOARS RIBS AER OSE BLES RE NSO SE 
@ HK Pet Te 
Of the Infide of the WALLS: 
ture; and the Vapour of it is hurtful to the 
Plants, 
Let the Proprietor allow the Expence of Stucco © 
to the whole inner Surface of the Walls and 
Cieling, and let the Plaifterer be directed to 
| work it with a perfect fmooth Surface. When 
this is well dry’d, let it be painted with the 
brighteft white that can be laid on, and it. 
will thus be finifhed for a great while. When 
the Smell is once over, it will return no more. 
The whole Surface will reflect the Light in a per- 
fect and uniform Manner; and the Plants will 
in this Refpect have all poffible Advantage. 
We are not of the Opinion of thofe who 
fancy, that the painting of a Greenhoufe with 
a dark Colour will make the Leaves fall off from 
all the Plants; but the Benefit of this Method 
‘of giving a true white Surface is certain; nor 
is any Thing fo agreeable to the general Ufe 
of the Place. 
The Plants are to be difpofed in this Green- 
houfe fo as to form a Kind of rifing Surface from 
the Front to the back ; and they are to’ be placed 
at fome fmall Diftance from one another: this. 
Method of difpofing them we have given in a 
preceding Number, where we fpoke of taking in 
the Plants at Autumn; ‘but this is one Confide- 
ration in favour of that pure and perfect white 
we direct for the inner Surface. The Trees and 
Plants, as fo placed, make one Mafs of green, 
and for that Reafon they are not feen diftinétly. 
On 
