NEW PLANTS. 1 
139 
the middle to be heated with a tank, which would then occupy 
the floor of the pit, and should be about six or eight inches deep, 
with a partition running from the end next the boiler to within 
a foot of the opposite end of the tank ; a flow or supply pipe is 
carried from the boiler into the tank on one side of the par¬ 
tition and a return pipe on the opposite; the tank may be 
covered and plunging material put over it to suit the purposes 
of the cultivator. When put in action there is a rapid circula¬ 
tion of the water, giving off a fine moist heat most congenial to 
the growth of plants; and if the size of the tank is proportionate 
to that of the house there will be sufficient surface heat to pre¬ 
vent the necessity of pipes of any description. The great ad¬ 
vantage lies in the large body of water applied, which from cir¬ 
culating attains a uniform temperature and retains its heat for 
a long period, insomuch that for a purpose that would require a 
fire constantly to acquire the desired heat from water circulating 
in pipes, by this method it would be attained with one hour’s 
fireing in the morning and two at night. Thus the saving in 
fuel and time is very considerable, nor is the difference in fitting 
up of less consequence. And, as facts are always to be pre¬ 
ferred to mere opinions, we will mention one instance; a house, 
for which the estimate for heating with a saddle boiler and pipes 
was £65, was heated by this method and one of Stevenson’s 
boilers for £19; nor will the gardener have reason to regret the 
rejection. In short, we cordially recommend the treatise to the 
notice of all who are about to erect new or have old or defective 
apparatus for the supply of heat. 
NEW PLANTS. 
G ynandria Monandria — Orchidacece. 
Cymbidium Devonianum . This very beautiful addition to 
the genus Cymbidium, was found by Mr. Gibson on the Khoseea 
hills in India, and introduced to Chatsworth in 1837. It bloomed 
there in the months of March and April of the present year. 
Mr. Gibson gathered it from the trunks of decayed trees, or 
from cavities in those old specimens which had become filled 
with vegetable mould. In England it grows very freely on any 
half-decomposed block of wood suspended in the orchidaceous 
house and kept in a shady moist place at a good distance from 
the glass. 
The species has roundish pseudo-bulbs, and throws from them 
fine racemes of bloom, from a foot to eighteen inches in length, 
which hang down after the manner of C. aloifolium. It is not 
much unlike the latter plant in the hue of its sepals and petals, 
which appear to be of a brownish cream colour, but the lip, which 
is the most conspicuous feature, is of a beautilul purplish crim¬ 
son tint, and very rich.— Pax . Mag. Bot. 
