Thus the carbonic acid from the skin
and lungs, being warmed in the body, rises as does the common air,
with which it mixes, toward the top of a room; so that usually there
is more carbonic acid at the top than at the bottom of a room.
[Footnote: Prof. Brewer, of the Tale Scientific School, says: "As a
fact, often demonstrated by analysis, there is generally more carbonic
acid near the ceiling than near the floor."] Both common air and
carbonic acid expand and become lighter in the same proportions; that
is, for every degree of added heat they expand at the rate of 1/480
of their bulk.
Here, let it be remembered, that in ill-ventilated rooms the carbonic
acid is not the only cause of disease. Experiments seem to prove that
other matter thrown out of the body, through the lungs and skin, is
as truly excrement and in a state of decay as that ejected from the
bowels, and as poisonous to the animal system. Carbonic acid has no
odor; but we are warned by the disagreeable effluvia of close
sleeping-rooms of the other poison thus thrown into the air from the
skin and lungs. There is one provision of nature that is little
understood, which saves the lives of thousands living in unventilated
houses; and that is, the passage of pure air inward and impure air
outward through the pores of bricks, wood, stone, and mortar.
Pages:
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82