The Game of Logic

by Lewis Carroll

i.e. Some mischievous creatures are not soldiers.

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Let "persons" be Universe; m="just";
x="my cousins"; y="judges".

No x are m; &there4 No x are y.
No y are m'.

i.e. None of my cousins are judges.

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Let "periods" be Universe; m="days";
x="rainy"; y="tiresome".

Some m are x; &there4 Some x are y.
All xm are y.

i.e. Some rainy periods are tiresome.

N.B. These are not legitimate Premisses, since the Conclusion is really part of the second Premiss, so that the first Premiss is superfluous. This may be shown, in letters, thus:--