ABSTRACT
We have seen in Chap. VI. that what appears at first sight as inference by construction is a genus containing two species. The first consists of syllogism, in which the premisses give conditions combined into a result. The second combines parts into a whole, or unites relations to form a resultant. These last appeared analogous to ordinary perceptual construction, but with this primâ facie difference, that they were or could be stated as general truths. This form of construction appeared in fact as a generalisation from experience, and a generalisation of a peculiar type. Our business in the matter is twofold; first, to get at the generalisations involved, and secondly, to explain and justify them.
