This article aims at a supplemont to Michio Masui: The Structure of Chaucer's Rime Words : An Exploration into the Poetic Language of Chaucer which was published in 1964. In recent years there seem to have increased a good number of references to the roles rime plays in poetry and to the functions rime does for various effects in poetic lines. In view of this literary tendency the present writer has since the publication of tho above-mentioned book gathered those opinions about and references to rimes which he came across while reading books of literary criticism and of philology. On the othor hand, he also has made observations on the linguistic and literary phenomena in Chaucer and in Middle English litcrature, especially romances, which are similar to those treated in the Structure of Chaucer's Rime Words. And what was most stimulating to the present writer when he was analysing and arranging these collected materials was that the structural principles on which his observation was mainly based have in most of the cases been approved by the scholars and critics who have taken interest in and given thought to the uses of rime. It is now obvious that in the future more serious attention should be called to tho functions of rimes in Middle English romances from this structural and even semantic point of view.