326 THE COTTAGE GARDENER AND COUNTRY GENTLEMAN, February 23, 1858. 
October generally lose only from 15 to 20 per cent.; and I 
have known some for New Zealand where 10 per cent, loss was 
the utmost.—D. Beaton.] 
d Syringa, 3 
c d llobinia pseudoacacia, 3 
c c English Maple, 3 
c d Tilia Europaea, 3 
c Hazels, 3 
r Norway Spruce, 3 
d Betula alba, 3 
e d Spanish Chestnuts, 3 
c 
c 
Mountain Ash, 3 
Alders, 3 
c Service Trees, 3 
v Horse Chestnuts, 3 
v English Oaks, 3 
c Eraxinus excelsior, 3 
d Larix Europaea, 3 
v Hornbeam, 3 
c c Guelder Roses, 3 
d Scotch Firs, 3 
c Sycamores, 3 
d ltibes Gordoniana, 2 
a d —-- pleno, 2 
a d Garrya elliptica, 2 
c c Forsythia viridissima, 2 
c Euonymus Japonicus, 
var., 2 
Buxus sempervirens, 2 
fal. 
a 
c 
d d 
d 
Aucuba Japonica, 2 
Prunus Laurocerasus, 2 
Lusitanicus, 2 
h Euonymus Japonicus, 2 
d Phyleria, 2 
d Common Irish Yews, 2 
c Evergreen Jasminum, 2 
b Ilex aurea variegata, 2 
b -ferox 
c, -argentea variegata 
b -tortuosa 
-balearica 
aquifolia 
ferox, fal. var. 
b 
b 
b 
o 
c 
c 
c 
c 
a 
a 
a, 
b 
b 
c 
b 
a 
b 
h’ 
b 
b 
c 
d 
c 
Andromeda Catesbeana, 2 
Berberis intermedia 
- aquifolia 
- rotundifolia 
- dulcis 
Spiraea bella, 2 
Azalea autumnalis alba, 2 
-viscosa alba, 2 
- coccinea, 2 
Pontica alba, 2 
Pontica, 2 
crispa, pink, 2 
flammea, 2 
albapraecox, 2 
carnea,2 
praecox, pink, 2 
sarenium auranti- 
cum, 2 
- aurantica pallida, 2 
- Pontica, 2 
Andromeda calyculata, 2 
-- quercifolia, 2 
-;- tomentosa, 2 
-pulverulenta, 2 
-paniculata, 2 
Syringa grandiflora, 2 
a Broom, White Portugal, 2 
Yellow Spanish 
d 
a d 
Eiica 
c 
a 
d 
d 
d 
d ■ 
ft ■ 
d 
d 
d 
d 
d 
d 
d 
d 
d 
a 
a 
pygmea 
arborea 
flore-pleno 
tetralix alba 
vulgaris Foxii 
vulgaris coccinea 
vagus alba 
Hammondii 
Mediterranea glauca 
stricta 
Mediterranea Hiber- 
nica 
vulgaris spicata alba 
scoparia 
hcrbacea 
vulgaris decumbens 
rigida 
vagus rubra 
Mediterranea 
carnea 
Makayana 
vulgaris aurea 
cinerea alba 
Alportii 
carnea monstrosa 
tetralix pallida 
• Menziesii, dwarf, 2 
- alba, 2 
a Erica purpurea, 2 
a Andromeda rosmarinifolia, 2 
b c -calyculata pri¬ 
mula, 2 
d Rhododendron Dauricum, 2 
a -Aitonianum 
c -Naviatictim 
b -multimacula- 
tum 
d -hybridum, 
scarlet 
a -myrtifolium 
a --—-—- ferrugineum 
d -Cujminghamii 
b -arborcum al¬ 
bum 
a 
b 
a 
b 
a b 
d 
a 
b 
b - 
b - 
b - 
d - 
roseum 
azaleoides, 2 
nivale 
Campbellii, 2 
Ponticumpur- 
pureum, 2 
Caucasicum 
robustum 
■ glaucum 
- arborcum ro¬ 
seum 
Marie Louise 
niveum 
cinnainomeum 
roseum 
Yerschaffeltii 
tigrinum 
• Leopardii 
-campanulatum 
b e Kalmia latifolia 
b d Buxus pendula fol. var., 2 
d - stricta variegata, 2 
b lluscus aculeatus, 2 
a Viburnum tinus, 2 
a Common Taxus, b, 2 
a Cryptomeria Japonica, 2 
a Juniperus Sabina, 2 
a Linus montana 
- Mughus 
a - Cembra 
-Hamiltonii 
a CedrusDeodara 
a - Libani 
a Taxodium sempervirens 
a Lignum vita; 
a Cupressus funebris 
a -—-excelsa, 2 
d Silver Spruce, 2 
a Upright Cupressus 
d Juniperus depressa 
b b Deutzia gracilis, 2 
a -Haminea 
a -scabra 
a Cistus canescens 
a -candanifcrus 
a -populifolia 
b Lonicera llexuosa, 2 
Mespilus pyracantha, 2 
AVhite Jasminum 
c d Lygustrum sempervirens, 2 
b Magnolia glauca 
b b Laurus nobilis, 2 
b Ilex latifolia 
b Virginian Creeper 
a Pyrus, double white, b 
b -J aponica 
b Iverria Japonica 
a Ivoelruteria paniculata 
b b Hydrangea Japonica, 2 
a Berberis Darwinii 
a Yellow Jasminum 
a Lavandula, 2 
b Evergreen Oak 
a Arbutus 
b Berberis mucronata 
a Abelia triflora 
b Syrnga Persica alba 
d -vulgaris, lilac, 2 
d —-Sibirica, 2 
c c d -alba, 2 
d Pcrnettya mucronata, 2 
d Syringa, Charles X., 2 
d Lonicera speciosa, 2 
d Spiraea Reevesii, 2 
a - rotundifolia 
c - lanceolata 
-Douglasii 
c - callosa 
a - Californica 
GROWING HYACINTHS IN MOSS. 
As I have never seen, or read of, the plan I adopt in grow¬ 
ing Hyacinths in glasses, I send it to you, feeling satisfied, 
from my own practice, that if any of your readers will give it 
a trial, they will be satisfied with the result. 
I select the darkest glasses, and, instead of filling them 
with water, I fill them with moss, gathered from any old 
building. I keep on adding a little water, to prevent the 
moss getting dry. The bulb retains its position, and blooms 
as well as when grown in the best of soils.—A Well-wisher. 
ON THE VENTILATION AND COVERING OF 
HOTHOUSES. 
By Mr. Thomas Moore. 
It is a well-known fact, that in producing an artificial 
climate, for the growth of tropical plants, or for the purpose 
of forcing those which are natives of more temperate regions, 
the less amount of artificial heat which is applied in keeping 
up a proper degree of temperature (so that this is done), the 
better will that climate be suited to its intended purpose, all 
other things being equal; and it is especially at night, when 
the plants are surrounded by darkness, and when excitement 
would be more than ever hurtful, that this becomes of in¬ 
creased importance. At night, too, it has been found that a 
depressed, rather than an elevated, temperature is desirable 
for the healthy development of all plants requiring artificial 
heat, inasmuch as they will not thrive without their natural 
season of repose. 
From the changeable nature of our climate, there is some 
difficulty in apportioning the degree of applied heat, so as to 
suit exactly the requirements of the plants ; and it is espe¬ 
cially difficult to maintain, with certainty, the low degree of 
night temperature which would be desirable, and at the same 
time avoid risking the safety of the plants, through a sudden 
and unexpected declension of the temperature of the exterior 
air. These difficulties, under present circumstances, have to 
be surmounted by a degree of watchfulness and care, which 
presses heavily upon the daily rest of those whose duty is thus 
involved, and incapacitates them, to a certain extent, for 
those studies which are indispensably connected with honour¬ 
able proficiency in their vocation ; nor is this watchfulness, 
though rigorously maintained, at all times attended with 
success. 
It appears to me, that the end in view would be much more 
effectually and certainly secured by a complete system of 
covering hot-houses and forcing-houses ; and this, too, would 
very greatly relieve the attendants. I am aware that night- 
covermg is a generally acknowledged benefit, and that it is in 
some cases acted on; but it should be more universally, and 
more systematically, followed up. To assist in bringing the 
principle of night-covering into more universal application, is 
the purpose of the following suggestion. 
I need not stop to show how night-coverings prove bene¬ 
ficial. It is sufficient to state, that whatever prevents the 
radiation of heat from the interior to the exterior atmosphere, 
through the conducting agency of the glass, decreases in the 
same ratio the amount required of applied heat, and hence 
saves the plants from being submitted to unnecessary excite¬ 
ment. The principle upon which a covering acts most 
efficiently, is that of enclosing a complete body or stratum of 
air exterior to the glass, this body of air being entirely shut 
away from the surrounding outer atmosphere; and as air is 
a bad conductor of heat, the warmth of the interior is by this 
means prevented from passing to the exterior atmosphere ; or, 
in other words, the exterior atmosphere, being prevented from 
coming in contact with the glass, cannot absorb from the 
interior any sensible proportion of its heat. To secure this 
advantage, however, the coverings must be kept from contact 
with the glass, and they should extend on every side where the 
structure is formed of materials, which readily conduct heat, 
such as glass or iron. The coverings, in fact, should form 
neither more nor less than a close outer case. 
One point connected with the application of these coverings, 
which I consider would constitute an improvement, and which, ; 
as far as I am aware, has never been acted on, is that of hav j 
