He says this, a censor of morals, a very pelican in his piety, who did not scruple, oblivious of the ties of nature, to attempt illicit intercourse with a female domestic drawn from the lowest strata of society!
There are no more uses of "strata" in the book.
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The candidate reaches across social strata — from millionaires to the unemployed.
Re-orientation of rock strata occurs principally due to tectonic forces.