Crystal Garden

The old crystal garden that fascinated people in Victorian times can be made by stirring together 4 Tbs. plain salt, 4 Tbs. laundry bluing, 4 Tbs. water, and 1 Tbs. household ammonia. Dissolve the salt, and pour the liquid over a porous rock or a piece of coal. Use drops of food coloring to dye the crystals.