leaves, either lies on the ground, or climbs and does not 
flower till one or two years after the other has born fruit. It 
is observed to vary in the number of the glands, in the colour’ 
of the corolla approaching more to scarlet than crimson, and 
in the nectary being greenish within instead of blue. It may 
certainly be esteemed as a splendid acquisition to-our stoves. 
The stoves, conservatories, end green-houses, belonging to 
Messrs. Loppices and Sons, are now entirely heated by steam, 
‘upon a principle that is simple and perfectly safe, and there 
is little doubt but that it will be evelong generally adopted, 
_ and that the use of steam will form a new era in the history. 
of hot-houses. We have been favoured witli the following. 
description of this very magnificent apparatus by MroGrores. 
Loppicss, under whose sole superintendance the whole has 
been constructed. : — : po 
- Two boilers of the same dimensions and construction 48 aré 
used in a steam-engine of twenty horses power, fitted in the 
usual way with safety and vacuum valves, hydrostatic balance, 
steam gage, &c. containing about two thousand gallons each, 
are erected at Hackney for warming the houses. One boiler 
only is used at a time, the other being kept as a reserve in 
case of any repairs being necessary. ee 
_-The steam from. these boilers is never more than 225° of 
Fahrei:heit, or 4 pounds to the square inch above the aimo- 
spheric pressure ; this is conveyed in cast iron pipes of 4 inch 
_ bore into the largest stove; which is 200 feet long and 22 feet 
high in the centre ; this house contains about 30,560 cubic 
feet of air, which is kept ia winter from 60° to 110° ;. the 
‘Steam is from this conveyed westward to three other houses, 
two of cooler and one of warmer temperature ;. containing 
together about 15,160 cubic feet, and eastward to a green- 
house 180,feet long, which communicates with another 492 
feet long, containing together. about 45,000 cubic feet ;. these 
are kept in winter at an average heat of 50°. ke 
‘There is altogether half a mile of pipe, the whole of which 
is charged with steam, and the houses warmed to the farthest 
extent in about twenty minutes, effectually keeping the air 
under 20,000 square feet of glass without covering, to the 
above temperatures ; producing a-regular, pleasant, and highly 
advantageous atmosphere for plants; perfectly divested of 
every su!phureous and scorching quali Ys which the best: regu- 
jJated furnaces and nicest constructed flues could never afford. 
Added to this, the tenderest stove plants are kept perfectly 
iuxuriant without tan, which has-ever been considered a most 
troublesome and expensive article; 
