The MZ 17-19 essays expound a well-known and characteristic tenet of Micianism. They share with MZ 14-16 the fact that each essay is twice the length of the preceding (successively 425, 1,172, and 2,016 words).1 As a supplement to my previous studies,2 I here consider the structure and rhetorical strategy of each essay, to show that (1) each is complete in itself, in further refutation of the fragment theory, and that (2) the series is developmental, in further refutation of the idea that they are parallel but geographically separate versions of the same thing.3