I am currently working through "Gradus ad Parnassum" in its english translation (Alfred Mann). In chapter One "Note against Note" (p. 27) I encounter "Principles for the forming of the melodies are discussed later". I have actually read through the First Part (Two Part Counterpoint) and there was hardly any discussion of cantus firmus rules. Should I be patient and read until the end or is it not covered in the book at all? I chose this book in the first place to have a complete and non-contradicting set of rules. In other sources (mostly online) there is much talk about the shape, climax etc., which I somehow miss here.