We would appreciate any ideas that you can put forth regarding adding humidity to wall showcases (4' x3'). They currently house organic anthropological artifacts but the humidity has dropped to 25%. They usually live at 45-50% in storage. The cases are obviously not sealed now and the problem of building a microclimate is that the temperature fluxuates from 72-80o due to the floodlights outside the cases about 6' away and the heating arrangements for a large lobby with doors to the outside. With that much change in temperature, the carrying capacity of the humidity might go over 50% and begin mold problems. I am listening for any suggestions but please post them to my personal address rather than clutter up the list. Thank you in advance, Carole S. DeFord Collections Manager Cranbrook Institute of Science -- Carole DeFord [log in to unmask] (Carole S. DeFord)