Danny -- I still have not come across the title you are seeking. I gather it is a translation of the first three chapters of Quenstedt's
Theologia didactico-polemica sive systema theologicum. However, if you are interested, Luther Poellot's 1999 translation of Quenstedt's
The Church (Theologica Didactico-Polemica, Part IV, Chapter XV: De ecclesia) is available for purchase ($12.00)
here.