One with a high threshold will doze through an amount of racket by which one with a low threshold would be immediately waked. Similarly, when one is sensitive to small differences in any order of sensation, we say he has a low "difference- threshold"—his mind easily steps over it into the consciousness of the differences in question. And just so we might speak of a "pain-threshold," a "fear-threshold," a "misery-threshold," and find it quickly overpassed by the consciousness of some individuals, but lying too high in others to be often reached by their consciousness. The sanguine and
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