In Chapter 14, Dr. Waxmo has a visitor. Who visits Waxmo, and what does he tell him?

In Chapter 14, a man wearing a dark ski cap, an amino belt, and khaki clothes visits Dr. Waxmo? He tells Waxmo that Mrs. Starch has heard about how he has been teaching and treating her students, and that she is not happy with his methods. He then tells him that he will call in sick and that his services are no longer needed at the school.