一,本篇的旨趣; 二,类音的作者及其著书的目的; 三,五十字母; 四,四呼; 五,全分音; 六,二十四颓; 七,反切; 八,结论。 一本篇的旨趣 专为了解音理起见,中国的等韵书实在值不得我们去研究;我们只须对於现代语音学作仔细的研究就行了。等韵书裹所阐发的音理,非但不能比现代语音学 First, the purpose of this article; Second, the class of the author and the purpose of his book; Three, fifty letters; Four, four; Five, full tone; Sixteen, twenty-four decadent; in conclusion. For the purpose of understanding the phonetic system, it is worth noting that the rhyme book of China can not be studied; we only need to carefully study the modern phonetics. Rhyme book wrapped interpretation of tone, not only can not be better than modern phonetics