Page:O. F. Owen's Organon of Aristotle Vol. 1 (1853).djvu/154

 as in those. When however the negative, universally assumed, is joined to the less extreme, if it be contingent, there will be a syllogism by conversion, but if it be necessary there will not be, and this may be shown in the same mode as in universals, and by the same terms. Wherefore in this figure it it is evident, when and how there will be a syllogism, and when of the contingent, and when of the absolute, all also it is clear are imperfect, and are perfected by the first figure.

Chapter 23
the syllogisms then in these figures are completed by the universal syllogisms in the first figure, and are reduced to these, is evident from what has been said; but that in short every syllogism is thus, will now be evident, when it shall be shown that every syllogism is produced by some one of these figures.

It is then necessary that every demonstration, and every syllogism, should show either something inesse or non-inesse, and this either universally or partially, moreover either ostensively or by hypothesis. A part however of that which is by hypothesis is produced per impossibile, therefore let us first speak of the ostensive (syllogisms), and when these are shown, it will be evident also in the case of those leading to the impossible, and generally of those by hypothesis.

If then it is necessary to syllogize A of B either as being with or as not being with, we must assume something of something, if then A be assumed of B, that which was from the first (proposed) will be assumed (to be proved), but if A be assumed of C, but C of nothing, nor any thing else of it, nor of A, there will be no syllogism, for there is no necessary result from assuming one thing of one, so that we must take another premise. If then A be assumed of something else, or something