101 



one or either of the gutters just as may be deemed 

 proper. The bottom heat to the plunging or plant- 

 ing out bed (a) is communicated through the brick 

 arch from chamber (&). Brickwork is found to be 

 by far the best medium, the porous material being a 

 good conductor, as well as a guarantee that no acci- 

 dent can happen from over-heating the roots, while 

 no difficulty will be found in raising the temperature 

 of the tan or soil in the bed to 75 or even 80 degs. 

 The pipes laid in gutter (c) are for supplying the 

 necessary heat to the atmosphere of the house, and of 

 course can be worked from the sa'me boiler with, or 

 independent of, the pipes in the chamber (b). You 

 will at once comprehend that a rotary motion is given 

 to the air in the house, a syphon action being formed 

 by admitting the heavier, viz. the cooled, air at the 

 register gratings (h h A), through the aperture (b)> 

 which, displacing the heated air in the chamber, 

 escapes through the higher cavity (m) ; thus a con- 

 stant circulation is kept up. {Gardener s Jonrn. 

 1845, 185.) 



Another pine stove, heated by hot water in pipes, is 

 at Bamford Hall, Bochdale, and is thus described by 

 Mr. Cherry, its superintending gardener : — It is un- 

 equally span-roofed, the front rafters being 1 1 feet 

 long and the back ones 6 feet. Its length is 25 feet, 

 and its breadth 15 feet, having a walk 3 feet wide 

 round the interior. It is fitted up with a shelf at 



