Concave AND Convex Refraction Together!

This one's by the teacher, because I thought it was just really interesting.

It's hard to find a concave lens without disassembling a piece of equipment, but I accidentally found one in this glass stem.  The amazing thing is, it's convex at the same time!  The 'tube' of the stem bulges outward (convex), but the sides also swoop inward along the length, curving inward (concave).

So, we see both 1) the shrinking of the image and 'more' than we as we would see without the concave refraction, and 2) the flipping of the image because the object is outside the focal point of the convexity.