-See if dwarves get a bad thought from being very near to magma.
-See the reaction of idle dwarves if their meeting area is filled up to 1/7 water.
Just throwing some ideas out there
As far as magma is concerned, I haven't ever seen any dwarf complain about heat. In fact, the only extreme temperature they complain about is getting caught in a snowstorm. Severe injuries due to magma don't count. I do have a magma experiment in the planning though, I just need to locate either the pool or pipe to start work on it.
And to water, I do have a Safe for that planned too, although with a bit more water than 1/7. Actually, make that two Safes working with water. It would have been 3, but I haven't seen any vermin fish in the river or any of the pools, save for turtles, so I can't do the third experiment, unless I could find some fish spawning.
The third experiment would have been the study whether or not dwarves will chase after vermin fish upon starvation, along if they can drink from the water surrounding them when the entire Safe is 4/7 to 5/7 in water.
Oh well.
Can you reliably produce a lot of miasma in one, maybe? possibly place it under a few others and make sure it's used as a dumping site?
Producing a lot of smoke without casualties might be more difficult. maybe dropping cats in magma.. the problem is keeping them from running through the living quarters, setting things on fire..
I have a test up for both miasma and smoke thought of, the miasma is easier for me to produce, but it of course requires a number of animals, their foals and other offspring to be precise. I'll build a pen for them at some point and release them all there for production.
The smoke, I have a set up thought of already that would minimize the risk of magma mist. I'm not exactly sure whether or not dumping items from height will cause said mist, but I'm not going to test it either because we all know magma mist only kills rather than makes dwarves go "what a beautiful magma fall".
I might do a magma injury test later on, or not, depending if I can think of a proper system for dispersing said liquid in a manner that doesn't instantly kill the subject. I mean, dumping 1/7 of magma on a dorf, while amusing, also would mean they're completely doused with it so death is assured. And what with my personal experience showing that contact with magma ends up with their feet horribly burned, I might not do that particular experiment at all.
Anyway. Sorry for today's lack of updates, there was a bunch of stuff that I had to do through the day, and a bit more this night, so I'll try and have stuff up again by tomorrow.
I might disable migrants for the time being, until I can get a few more Safes up and ready, but that shouldn't take that long. Up to next Winter, I figure, I should have a few other experiment areas up and ready.
The first wave caught me a bit offguard, what with the designated Safes being a bit unfinished. Had to use the test subjects as building force before they were thrown in.
Also, to the Control Safe. Hurm. Wouldn't that be like a normal fortress? I'm currently looking into testing the extreme situations here rather than normality, although if you could put in a few lines why exactly I should do that one as well, I'm of course willing to add such a Safe.