MODE OF HEATING BY STEAM. 
99 
plant in Demarara, whence Mr. Bateman received a single bulb by 
bis collector, Mr. Colley. Although not handsome, this is an in¬ 
teresting plant, as confirming the genus Monacanthus, which before 
consisted of but a single species found in the Brazils.— Dr. Lindley 
_ ' 
in Bot. Reg. 
Giiobya Amherstia:, Lady Amherst’s Grobya. This curious 
species was sent from Brazil, by Mr. Hayne, in 1829. It flowered 
for the first time in September last, at Montreal, in the collection of 
the Countess Amherst.— Dr. Lindley in Bot. Reg. 
ARTICLE VI. 
t 
DESCRIPTION OF VARIOUS MODES OF HEATING BY STEAM, FOR 
HORTICULTURAL PURPOSES. 
BY MB. HENRY STOTHERT, CIVIL ENGINEER, BATH. 
Extracted from the London Horticultural Society's Transactions. — Vol. 1, New Series, Part 3. 
For Pine Pits.— Figs 5 and 6, represent a mode of obtaining 
bottom heat by means of a cistern of water heated by small steam 
pipes, which are introduced near the bottom, leaving only sufficient 
drainage to take away the 
condensed water. The 
depth of the water in the 
cistern is about one foot, 
which is warmed gene¬ 
rally about twice a day, by means of two one-inch steam pipes, each 
going to the further end of the cistern, and returning again in the 
opposite direction, as 
shewn in the sketch; by 
this means the heat is 
very equally distributed. 
At each end of the cis¬ 
tern, a small passage is 
left for the purpose of 
ascertaining the temper¬ 
ature of the water, and which will, if left open, admit considerable 
humidity to the house or pit. 
Across the cistern are laid joists, which support a paving of stone 
or brick, laid without mortar, on which is placed a bed of broken 
stones or bricks, about one foot in thickness, which towards the top 
are about the size commonly used for macadamizing the public 
roads; this is again covered with a bed of ashes, in which the pots, 
are placed, as in the usual way. 
