And she was conscious of having been looked at a great deal, in rather a furtive manner, from beneath a pair of well-marked horizontal eyebrows, with a glance that seemed somehow to have caught the vibratory influence of the voice.
He might have been sitting for his portrait, which would have represented a rather striking young man of five-and-twenty, with a square forehead, short dark-brown hair, standing erect, with a slight wave at the end, like a thick crop of corn, and a half-ardent, half-sarcastic glance from under his well-marked horizontal eyebrows.
There are no more uses of "horizontal" in the book.
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Paintings in which horizontal lines dominate, tend to be relaxing.
The whole thing goes horizontally, too, at least it seems so, and I exhaust myself in trying to distinguish the order of its going in that direction.