In dirty upper casements, here and there, hazy little patches of candlelight reveal where some wise draughtsman and conveyancer yet toils for the entanglement of real estate in meshes of sheep-skin, in the average ratio of about a dozen of sheep to an acre of land.
There are no more uses of "ratio" in the book.
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The ratio of the 2nd to 4th finger length predicts spatial ability in men.
Their profitablity ratios are good, but their liquidity ratios are of concern.