242 
THE FLORIST’S JOURNAL. 
wood was declared to be a non-conductor, and altogether 
unsuited to the purpose; but we find that heat passing through 
it assumes a much more genial character than that given off 
either from slate or iron ; and an inch board of good yellow deal 
will last longer even in such a situation than some are inclined 
to believe. 
Section of Pit,— Showing the Improvement. 
e. Space left between the false bottom and the tank, so that by 
this means the whole bottom surface of the bed is heated 
equally at the same time. The great advantage of this plan 
must at once be seen; for it is obvious that if the false bottom 
rested immediately on the top of the tank, the tank must 
of necessity be the width of the bed, or an uniform heat 
could not be obtained throughout the bed. 
f. The bed. 
g. Space under the shelving-boards where the circulating 
heat is accumulated. 
