500 On Raisintj New Vmieties nf the Tree Pceony. 
Many of the OrcJudece are parasiticfil, and require a portion of 
decayed wood mixing with the soil; — others gi'ow iu damp moss — but 
these being chiefly stove plants, they will not flourish in a room: there 
are several genera however, that do very well both in the green-house, 
and in rooms, as Arethiisa, Calopdyoiiy Dendrobrmm, Oplirys, &c. 
the soil suitable for these, is a mixture of about equal parts of light 
sandy loam and peat ; very little, or no water, must be given when they 
are not in a growing state. 
Succulent plants, of all descriptions, require very little water, and 
in general are very easily managed in rooms ; many of them thrive in 
a mixture of sandy soil and lime rubbish, as Aloe, Cacdlia, Cactus, 
Aj,sdon, &c. ; others grow well in a mixture of peat and loam, as 
Goris, Cotyledon, Mesembrydntliemum, &c. 
Aquatic plants, as Pllldrsia, Actinocdrpus, &c. generally do well 
in a mixture of peat and loam, and require to be constantly kept in a 
wet state ; — indeed the best way is to place the pot in a deep pan or 
feeder, which should always be kept full of water. 
Bulbs of most sorts, flourish in rooms, with less care than most 
other kinds of plants. 
If the above precautions be attended to, plants may be brought to 
neai'ly, if not altogether, as much perfection as in a green-house. 
Joseph Paxton. 
Article XII. — On raising new varieties of the TreePseony, 
(Paeonia Moutan Banksia.) By Mr. Mowbray, F.H.S. 
Curator at the Manchester Botanical and Horticultural 
Society's Garden. 
I BEG to call the attention of the readers of the Horticultural Register, 
to that charming plant, the Tree Peeony, [Pceonia moutan JBdnksia.) 
It is well known, that it frequently produces seed, and I have no doubt 
it would do so more abundantly, if attended to by impregnation. 
If pollen were procured from P. rubra, papavardcea, or any other 
variety of the same species, the chance of new varieties would of course 
be greater ; but where this is not the case, 1 should not despair of ob- 
taining new varieties fi*om the old one, although I know a place near 
London, where a few were raised from seed of it, and those which 
flowered proved to be the papavardcea, which well agrees in the latter 
being called the type of the species. 
Mr. Sabine, in vol, (i of the Horticultural Society's Transactions, 
has described nine varieties, three of which were raised under my care 
at the Earl of Mountnorris's, Arley-Hall, Staffordshire; of these, I 
