574 
HOTHOUSE AND GREENHOUSE ARCHITECTURE. 
Rye, for green food, sow 25th September, 
24 gallons liquid manure to 1 rod, previous to 
digging the ground. In drills 5 inches apart, 
using 2} y bushels per acre. 
Tares, September 18, in drills, 1\ bushels 
per acre ; or broadcast, 4 bushels per acre. 
Any directions as to the quantity of manure 
to be used, without knowing what such ma- 
nure is composed of, must be fallacious. Five 
cwt. of the following mixture applied to an 
imperial acre has been recommended by the 
most eminent agriculturists in this country: — 
s. d. 
78| lbs. bone-dust, at 2*. 6d. per bushel . . 4 4J 
25 „ sulphate of ammonia 3 9 
lj „ pearl-ash 2£ 
[ 25 ,, common salt 6 
2 J „ dry sulphate of soda 2J 
132J „ at a cost of 9 0* 
Planting Hedges. — The best time for 
planting Whitethorn hedges is immediately 
after the fall of the leaf in autumn ; for at that 
juncture a tree is at complete rest, and has not 
commenced to prepare the necessary secretion 
for its support during the following spring 
and summer. The latter part of October, and 
the commencement of November, then, is the 
season when those plants should be removed. 
September and October are the months in 
which hedges should be trimmed ; and if it 
should be necessary to dig about their roots 
in order to add manure, this work should be 
also performed in November. If a hedge 
should not require manuring, the hoe only 
should be used in cleaning. 
HOTHOUSE AND GREENHOUSE ARCHI- 
TECTURE. 
(See Frontispiece) 
There is much yet remains to be realized 
in the erection of houses for the cultivation 
of plants, not only as regards their number 
and dimensions, but also in their arrange- 
ments and details. Look where we may, we 
seldom see more than the same kind of flat 
lean-to or span roofs, the same kind of formal 
stages when the plants are grown in pots, and 
the same kind of formal beds when the latter 
are planted out in borders of prepared soil. 
Even refinements or elegancies of construc- 
tion fail to invest such buildings with any cha- 
racter of distinctness or novelty, owing to the 
sameness or monotony which forms the basis 
of the design. So very generally is this the 
case, that one can form a tolerably good idea 
beforehand of nine-tenths of the buildings 
which exist. As far as relates to the exterior, 
some improvement in this respect has resulted 
from the partial adoption of what is called 
the ridge-and-furrow style of roof ; this con- 
sists of a series of small spans placed side by 
side, so as to cover the area ; and they admit 
of being so arranged as to produce a very 
ornamental effect. This style, too, forms the 
basis of the plan which promises to subvert 
the monotonous interior arrangements already 
referred to, inasmuch as when applied on a 
grand scale, it facilitates the covering of larger 
areas of ground, in which the absolute neces- 
sity of departing from long-cherished arrange- 
ments must eventually lead to great improve- 
ments in this respect. But even as now 
generally applied, this style of building leaves 
the interior unchanged, for the same mode of 
disposing of the plants is in most cases fol- 
lowed. 
This ought not to be. Gardens would lose 
half their charms were we to see the same 
thing imaged everywhere: it is, in fact, in 
the endless variety in connexion with intrinsic 
beauty, of which they admit, that their fasci- 
nations rest. And why should it not be so 
with horticultural erections for the growth of 
exotic vegetation ? Why should these, which 
are to a certain extent invested with the ad- 
ditional charm of rarity, be deprived of the 
charm of variety? Why should we not have 
groves, and lakes, and flower gardens, and 
rocks, and caverns, with their appropriate ve- 
getation, within as well as without ? In the 
former case their beauties would be available 
either for admiration or study at all seasons ; 
in the latter, the fickleness of our climate 
often acts as a preventive to both these 
exercises. 
We are not without experience of arrange- 
ments such as those which are here proposed 
for more general adoption. The conservatory 
in the garden of the Royal Botanic Society in 
the Regent's Park, which covers at present an 
area of about one hundred and seventy-five feet 
by seventy-five feet, and which is only a small 
portion of the contemplated design, is laid out 
in this informal manner, with groups of allied 
plants that will eventually give it something 
the character of a natural grove. The com- 
plete design of this fine building embraces also 
an artificial lake for the growth of tropical 
aquatics, and provides for the disposal of the 
surface in a picturesque and undulating man- 
ner. Another instance occurs at The Holme, 
Regent's Park, the residence of J. Anderson, 
Esq., where is a rock house for Orchids and 
Ferns, of which the frontispiece of the present 
volume is a representation. This, though on a 
small scale, is a fairy scene, and attests the taste 
with which the proprietor patronizes the de- 
lightful science of horticulture. Here there 
is no similarity to be traced with the erections 
which are usually seen ; and on entering it the 
eye is at once relieved from that monotony 
which is, as we have already remarked, so 
generally apparent as to become wearisome, 
