Gage, Alfred P. (Alfred Payson), 1836-1903, Fessenden, C · Toronto : W.J. Gage · leaf 23
that, in order to smell any substance, we must take into our nostrils, as we breathe, small particles of that substance which aie floating in the air. The air, for several meters around, is sometimes filled with fragiance from a rose. You caimot see anything in the air, but it is, never-theless,… … THE MOLECULE. 7 years, by constantly sending forth into the air a dust of musk.Though the number of particles that escape must be countless,yet they are so small that the original grain does not loseperceptibly in weight. The microscope enables us to see, in a single drop of stagnantwater, a world…
Physics
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