of these objects, but particularly de former, the most : 
regard of economy is often perceptible, as well in the arra 
- burning, as in the manner and extent in which the heat is ape 
_ So long as the original forests of our country were standing, little 
Saaitance was attached to this branch of economy. The burning 
of a huge mass of cord-wood in a broad open-mouthed chimney, 
supplied to a certain extent, the desired temperature, and involved 
as a consequence, the production of such currents of air as effec- 
cally prevented stagnation in the atmosphere of apartments. Hence 
: occupants were seldom exposed to the peculiar maladies which 
arise from a stifled air. 
_ Indeed, the rude and almost primitive method of heating apart: 
ments, then in use, rendered their inmates subject to a contrast of 
Sensations, quite as striking as that paradox, which the philosopher 
exhibits, when by the ebullition of one liquid, he causes the simulta- 
neous congelation of another. The chilling blast which assailed one 
part of the person, vied strangely with the scorching radiance which 
beset the opposite. 
. The present expensiveness of fuel, renders it desirable to. arrange 
our houses in some manner different from the ancient method ; so 
_as at once to limit the consumption of fuel, and to secure an ample 
supply o: of wholesome air. The latter requisite is too often sacrificed 
to the mere elevation of temperature. Not only is the composition 
of the air allowed to be deteriorated by frequent respiration, but its 
hygrometric state is sometimes such, as to operate most injuriously on 
the system. Nature is, in general, careful to supply our lungs with 
‘air capable of receiving from them some portion of moisture ; if this 
portion be either too great or too small, the lungs, and eventually the 
whole body, will suffer either from the excess or the deficiency. To 
meine this quantity is one part of our own duty. 
» The gradual troduction of mineral fuel, especially of anthracite 
wil probably introduce some changes in domestic arr 
Which will supersede the use of those more bulky, troublesome, aad 
unsafe materials, heretofore employed in combustion. ‘The conse- 
quences of such changes, if judiciously made, will doubtless be the 
diminution of expense, the saving of labor, the gaining of comfort; 
and the economizing of space and time. 
Those awkward projections which now encumber and defertoms 
spares, under the name of chimnies, filling, in many eases, from 
ohe-twentieth to one-sixteenth of the whole area of the room, and 
