Question: What is the hospitaler inserting into his mouth as he squats near the creek?
Answer: The answer is a "miswak," a dental hygiene twig used, and still used, for cleaning the teeth.
Question: Is this the last movie to be shot, edited and finished on film?
Answer: It's a bit difficult to find out this sort of information as not all films released disclose what they use to edit on. Michael Kahn is perhaps the most famous editor around to edit on flatbed machines and switched to digital editing for time constraints. Many film schools still teach and use flatbed editing so you may still see short films edited on film, just not feature length movies for a variety of reasons.
Answer: I thought it was cotton with oil of clove for a bad tooth.