Not indolently soft, like that which sifts in green shadow through the leafage of a summer garden, but tense, alertly and mysteriously expectant, was the silence of the forest. It was somehow like a vast bubble of glass, blown to a fineness so tenuous that a small sound, were it but to strike the one preordained and mystic note, might shatter it down in loud ruin. Yet it had existed there flawless for generations, transmuting into its own quality all such infrequent and inconsequent disturbance as might arise from the far-off cry of the panther, or the thin chirp of the clambering nuthatch, the long, solemn calling of the taciturn moose, twice or thrice repeated under the round October moon, or the noise of some great wind roaring heavily in the remote tops of pine and birch and hemlock. Few and slender were the rays of sun that pierced down through those high tops. The air that washed the endless vistas of brown-green shadow was of a marvellous clarity, not blurred by any stain of dust or vapour. Its magical transparency was confusing to an eye not born and bred to it, making the far branches seem near, and the near twigs unreal, disturbing the accustomed perspective, and hinting of some elvish deception in familiar and apparent things.