Imperceptibly I became conscious of a change in Biddy, however.
By imperceptible degrees, as the tide ran out, we lost more and more of the nearer woods and hills, and dropped lower and lower between the muddy banks, but the tide was yet with us when we were off Gravesend.
But, imperceptibly, though I held by them fast, Joe’s hold upon them began to slacken; and whereas I wondered at this, at first, I soon began to understand that the cause of it was in me, and that the fault of it was all mine.
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...and he let the line slip down, down, down, unrolling off the first of the two reserve coils. As it went down, slipping lightly through the old man’s fingers, he still could feel the great weight, though the pressure of his thumb and finger were almost imperceptible.