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Page:Carroll - Game of Logic.djvu/99

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§ 7.
83
BOTH DIAGRAMS EMPLOYED.
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    Let "persons" be Universe; = "Jews"; = "mad"; = "Rabbis".

    No are ;
    All are .
    ∴ All are .

    i.e. All Rabbis are sane.

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    Let "Things" be Universe; = "fish"; = "that can swim"; = "skates".

    No are ;
    Some are .
    ∴ Some are .

    i.e. Some skates can swim.

[See p. 54]