Your Council have done me the honour of inviting me to read a paper before you this evening, and have suggested as a subject “Fugal Structure.” It gives me very great pleasure to accede to their request. I presume that the choice of the subject proposed to me is due to my having recently published a book on Fugue, in which I have ventured to express views differing considerably in some respects from those to be found in most other text-books; and I think I may probably take it that I am virtually invited to explain and justify the position I have taken up. If this be so, I most willingly accept the challenge; for my only object is the truth, and there is everything to be gained by full and free discussion. I fear, however, that for those who have already read my book on Fugue, the present paper will present but little novelty; for it will necessarily be little more than an abstract of the contents of my volume. There is one advantage at least; it will furnish an opportunity for thrashing the subject out thoroughly; and I think it very probable that the discussion which I hope will follow my paper may prove to be the most interesting and profitable part of this evening's proceedings. In order to leave as much time as possible for discussion, I shall endeavour to condense what I have to say, as far as I can do so without sacrifice of clearness.