transition. The process of settling down is aided by the organs of speech and by the use of writing and printing. (2) The meaning of words varies because ideas vary or the number of things which is included under them or with which they are associated is increased. A single word is thus made to do duty for many more things than were formerly expressed by it; and it parts into different senses when the classes of things or ideas which are represented by it are themselves different and distinct. A figurative use of a word may easily pass into a new sense: a new meaning caught up by association may become more important than all the rest. The good or neutral sense of a word, such as Jesuit, Puritan, Methodist, Heretic, has been often converted into a bad one by the malevolence of party spirit. Double forms suggest different meanings and are often used to express them; and the form or accent of a word has been not unfrequently altered when there is a difference of meaning. The difference of gender in nouns is utilized for the same reason. New meanings of words push themselves into the vacant spaces of language and retire when they are no longer needed. Language equally abhors vacancy and superfluity. But the remedial measures by which both are eliminated are not due to any conscious action of the human mind; nor is the force exerted by them constraining or necessary. (7) We have shown that language, although subject to laws, is far from being of an exact and uniform nature. We may now speak briefly of the faults of language. They may be compared to the faults of Geology, in which different strata cross one another or meet at an angle, or mix with one another either by slow transitions or by violent convulsions, leaving many lacunae which can be no longer filled up, and often becoming so complex that no true explanation of them can be given. So in language there are the cross influences of meaning and sound, of logic and grammar, of differing analogies, of words and the inflexions of words, which often come into conflict with each other. The grammarian, if he were to form new words, would make them all of the same pattern according to what he conceives to be the rule, that is, the more common usage of language. The subtlety of nature goes far beyond art, and it is complicated by irregularity, so that often we can hardly say that there is a right or wrong in the formation of words. For almost any formation which is not at variance with the first principles of language is possible and may be defended.