64 
GENERAL CULTURE OF STOVE PLANTS. 
bearers, or suspended by wire or cord ; the two latter methods assist the fire to burn 
more freely. 
But when a very powerful heat is required, the system adopted at the seat of 
J. T. Crosley, Esq., Wavertree, near Liverpool, will answer. The required degree 
of heat is easily obtained by regulating the damper, and by means of cocks. In 
consequence of the grate becoming choked with scoriae, it sometimes happens that 
open dampers and full circulation will not effect the desired heat ; in that case tilt 
the door on the top of the furnace with an iron wedge, about two inches high, this 
will soon raise the heat to the degree required ; in fact, if coals are used, this door 
should always be left a little open, or the hydrogen collecting at the top of the 
furnace" may explode, and rift the brickwork. Where coke is used this can never 
happen, that principle being in a great measure extracted. 
In the ground plan 1, a, is intended to show two pipes upon the front walk: 
b, brackets supporting the front pipes, and iron trellising, round the house ; c, 
cocks to turn the front pipes off; d, pipes for heating the pits ; e, cocks to turn 
the pit pipes off; f 9 iron trellising for flower-pots ; g, return pipes for each house, 
coned into the connecting pipe ; h, connecting pipe ; i, return pipe to the coil ; 
k } flow pipe from the coil; I, a portion of the pit covered in with boards; m, 
holes cut in the boards, for the pots of plants requiring bottom heat to rest on their 
rims ; n, bearers to support the boardings and pots ; o, sliding doors. 
No. 2 is a section across the furnace : a, is a coil or boiler consisting of fifteen 
rounds of inch piping set in a descending furnace ; b, iron-door and casing upon 
the top of the furnace, for putting down the fuel ; c, double door for lighting the 
fire, and drawing out the scoriae; d, ashpit door ; e, grate bars ; J] iron bridge 
supporting the wall which separates the fire from the coil. 
No. 3 is a representation of the front of the furnace : a, is the ashpit door ; b, 
the fire door ; c, dust door, for cleansing the coil ; d, the same open ; c, the furnace 
top door. 
No. 4 is a representation of trellis, supported by brackets, b, in the ground plan, 
No.l. 
No. 5 is the elevation of the front inside : a, is intended to represent six pipes 
against the front wall ; c, short brackets for trellising. 
No. 6 is the elevation of the back wall : a, is the expansion pipe ; b, flow pipes to 
the pits ; c, flow pipes to houses on each side of glass partition, going over the doors 
to the front wall ; d, flow pipe from the coil to the expansion pipe ; e, brackets fyr 
supporting the trellising ; f, back trellising ; g, air-screw. 
No. 7 is a section of the house and shed : a, is the expansion pipe (see a, No. 6) 
b, flow pipe; c, filling pipe ; d, flow pipes for each house ; e, flow pipes for each pit ; 
f, pit pipes ; g, cocks for pits ; h, return pipes for pits and houses ; i, connecting 
pipe ; k, dust door for cleansing the back of the coil ; I, six front pipes ; m, brackets 
supporting front pipes and trellising ; n, brackets supporting the back trellising ; o, 
damper. 
No. 8, are figures of roof lights : a is the bottom light, and b the top one. 
The small scale is for Nos. 1 , 5, 6, 7j> 8, and the large one for Nos. 2, 3, and 4. 
Mr. Stothert, civil engineer, Bath, has described in the transactions of the 
