52. A prime requisite of a good phrase is that it should be capable of being read easily and unmistakably. Sometimes one phrase is liable to be mistaken for another, or for a word of several strokes. Sometimes there is difficulty in reading, because there has been introduced into the phrase a word-sign (that is, an incomplete outline, containing less than all the consonants of the word) not common and suggestive enough to be recognized when thus combined with other words. Certain incomplete outlines, such as shall, will, think, opinion and many others, may be freely introduced into phrases, while other outlines, to be legible, re quire to be written separately and in their normal positions. The phrase, many different times, would not be easily read, because the signs different and times require isolation and special position to make them legible. What incomplete outlines and what unvocalized word-forms may without peril be introduced into phrases will be best learned by experience and practice - especially by practice upon phrases given in this book, in collecting which the effort has been to introduce as many as possible of those common words which go to make up the phrasing vocabulary.

53. Sometimes a phrase is hard to read because it contains some difficult and unfamiliar word, which ought to have been, but is not, made clear by vocalization, more or less full.