These sections of hard chalk are invariably those which at their base are washed by the sea at high tide; all others are soft and crumbly.
"Climbing in The British Isles. Vol. 1 - England"
W. P. Haskett Smith
Mix in just enough water to wet thoroughly, and beat briskly; the result should be almost crumbly.
"Camp and Trail"
Stewart Edward White
Frequently parts of the cap, the entire stem and the gills are covered with a white, crumbly, floccose substance of a mealy consistency which often sticks to the hands or other objects.
"Studies of American Fungi. Mushrooms, Edible, Poisonous, etc."
George Francis Atkinson