It is scarcely possible to lay down rules for the use of the cæsura, or pause, in English verse. It differs from the classic cæsura in falling at the end of both foot and word. Of its possible varieties we may gain some idea when we note that, in the decassyllabic line, for instance, it may fall after each foot, and it is by the shifting of its place that in this, as in blank verse, monotony is avoided. In shorter measures, especially of a lyric nature, it generally falls midway in the line.
The plan of giving to our accentual feet the titles given to the classical quantitative feet has been strongly condemned by some writers. I venture to think they have hardly considered the matter sufficiently. It must be better to use these meaningless terms (as we use the gibberish of Baroko and Bramantip in logic) than to apply new names which, by aiming at being expressive, may be misleading. But there is something more than this to be considered. There is in accent this, in common with quantity, that just as two shorts make a long, and can be substituted for it, so two unaccented syllables may take the place of one rather more accented; or perhaps it will be found that the substitution is due less to the correspondence in accent alone, than to correspondence of quantity as well as accent. To put it briefly, these resolutions of the foot into more syllables are—like similar resolutions in music—a question of time, and time means quantity rather than accent. As an instance of this, I may give the much-quoted, often-discussed line—
The ordinary method of scanning this is to make a dissyllable of "tired," as if it were "ti-erd," a vulgarism of which its author would never have been guilty. The truth is, that the long "i" and the roll of the "r" correspond in time to a dissyllable, and by changing the run of the line, carry out perfectly Pope's notion of the sound echoing the sense.
These resolutions, therefore, need a most accurate ear, and no slight experience. The versifier will do well, as a beginner, to refrain from attempting them. When he has gone on writing verse by rule of thumb until he begins to discover a formality in them that would be the better for variation, he may fairly try his hand at it—but not until then. Before that, his redundancy of syllables would be the result of faulty or unfinished expression, not the studied cause of a change in run.