CrystalsAn early Things of Science unit that explores crystals. This is one kit that was in bad shape due to the way the crystals aged. Apparently one of the chemicals adsorbs water and the booklet was moist. A similar unit of Things of Science I picked up later on eBay also had the same problem.

Here is the booklet (cleaned up):

Things of Science #338 — Crystal Growth

More Things of Science scanned here.