Sentence:  England produces practically no food, but great quantities of coal, steel and manufactured goods. Isolate her absolutely, and she will not only starve, but will stop producing manufactured goods, steel and coal, because those who usually produce these things will be getting nothing for their labor except money which they will be unable to use to buy dinners, because there will be no dinners to buy. That <WSD>supposititious</WSD> case is a precise parallel to what has happened in Russia. [Note: "The UK edition reads" “that suppositious case.”] 
Meaning of the word marked with <WSD> tags:  Supposed or hypothetical.