In this figure one can see the change in color of the gills just at the time when they begin to Deliquesce.
"Studies of American Fungi. Mushrooms, Edible, Poisonous, etc."
George Francis Atkinson
The plants are very fragile, more or less mucilaginous when moist, usually with yellowish colors, and, what is the most characteristic feature beside the yellowish color of the spores, the gills are very soft, and at maturity tend to dissolve into a mucilaginous consistency, though they do not Deliquesce, or only rarely dissolve so far as to form drops.
"Studies of American Fungi. Mushrooms, Edible, Poisonous, etc."
George Francis Atkinson
Crystals of some substances Deliquesce, or take water from the air, and thus dissolve themselves.
"An Introduction to Chemical Science"
R.P. Williams