-figure 4. 
hardier and better adapted to planting out. 
One ton of pea coal, costing here $1.60 will 
furnish fuel sufficient to run a bed of 25 sashes 
for two or three months, while the horse manure 
required for the same sized bed would cost not 
less than $25. and would be hard to purchase 
at that. 
Good sash, glazed and ready for use, will cost 
from $2.25 to $ 2.75 each. There should be no 
cros3 bars protruding above the face of the glass, 
but each pane lap a half iuch or so on the paue 
below it so that the rain water will run off 
readily. Thus many .pieces of glass and broken 
panes may be worked into advantage, inaking 
the cost less and diminishing the risk of break¬ 
age. 
In all the above plans it is quite necessary 
that the bed be on ground that has a number of 
feet of rise in order to carry the pipes up, and 
thus insure a good draught. If a flue be carri¬ 
ed for a long distance on a level or with but a 
few inches of rise, the current of air becomes so 
cool by the time it reaches the chimney that it 
will not move the column of cold air in it, and 
a difficulty will be experienced in starting the 
fire. In case it is necessary to construct a bed 
upon level ground, probably no better arrange¬ 
ment can be found than one which we find in 
the American Agriculturist which was applied 
to heating Greehouses by Mr. Wm. K. Harris, 
of Philadelphia. We think it will be adapted 
to heating Fire Hot Beds, as well as Greenhous¬ 
es. The furnace is built at one side of the mid¬ 
dle of the bed, as shown in figure 6. The bars 
for the grate are 40 inches long, and enough of 
them to make a width or grate of 18 inches. 
The sides of the furnace are built of fire brick to 
a height of 15 or 18 inches, over which is thrown 
an arch or a plate of irou. From the neck of 
this furnace proceeds two flues, one turning to 
the right and the other to the left. These are 
built of brick so as to form a flue of 8 inches 
square inside. At a distance of 25 feet from the 
furnace they may be made of terra cotta or 
drainpipe. These flues should be raised from 
the ground so as to keep them from damp, and 
that the radiation of heat may be obtained 
from all sides. This house or bed is one hun¬ 
dred feet long, so each flue forms a length of 
about one hundred feet and should rise at least 
one foot in its length, so as to enter the chimney 
directly over the furnace, and a foot higher 
than when it started out. This method of plac¬ 
ing the chimney on the furnace is the key to 
the whole improvement. The contiuned heat 
given o»4 from the furnace is sufficient to drive 
