Page:Carroll - Game of Logic.djvu/42

26 tribute belonging to the 'Middle Terms', we will let $$m$$ stand for "canny",$$x$$ for "Dragons", and $$y$$ for "Scotchmen". So that our two Premisses are, in full,

And these may be expressed, using letters for words, thus:

The first Premiss consists, as you already know, of two parts:

And the second also consists of two parts:

Let us take the negative portions first.

We have, then, to mark, on the larger Diagram, first, "no $$x$$ are $$m$$", and secondly, "no $$y$$ are $$m^\prime$$". I think you will see, without further explanation, that the two results, separately, are