I've actually seen these in use (or at least most of them). I can't say that their use was exactly correct, but essentially (What I saw) it's a set to mix liquids by boiling then re-condensing them.
The two wash bottles are just that. Wash bottles, the first has cork so you don't drop it. The second, I think, allows you to control flow of the liquid by placing your finger over that air vent.
#4 is where the finished product goes. I'ts just a collection point nothing else.
#5 is a condensing tube, you run a cool substance (probably water) and in the outer chamber and then gas turns back to a liquid.
# 6 is Like the pipe under your sink. As long as there's no pressure it allows liquid to flow without letting gasses flow.
#7 is a Crooks tube. It is used to generate X-Rays. It doesn't have anything to do with the rest of the set. I have only seen one used once. It was used to demonstrate that you could "bend" X-Rays with a magnetic field.
#8 is a poster, to remind us that,even in history, the people making the safety posters didn't always choose their slogans wisely.
So what's missing is a bunch of tubing, but you basically end up with mad scientist looking way to mix liquids, or probably to condense a gas created in the copper pot.
For example, (totally guessing here) based on the history of the school,
- Place rocks in copper pots
- Use #2 and #3 to put a corrosive liquid onto the rocks.
- Use #6 to collect gasses from chemical reaction of materials in rocks + corrosive liquid. The rock/liquid mixture probably has to be heated.
- Use #5 to condense liquids to collect in #4.
Play with X-Ray tubes while you wait, and make fun of old timey poster?