ADVERTISEMENT. What I have here to say is rather in the nature of an apology than of a preface or advertisement. The very title of a Treatise upon the art of dancing by a dancing-master, implicitly threatens so much either of the exageration of the profession, or of the recommendation of himself, and most probably of both, that it cannot be improper for me to bespeak the reader’s favorable precaution against so natural a prejudice. My... more...