Chalk produce, and thus widely used in the developing world, calcium-based chalk can be made where the crumbling particles are larger and thus produce less dust, and is marketed as "dustless chalk". Colored chalks, pastel chalks, and sidewalk chalk (shaped into larger sticks and often colored), used to draw on sidewalks, streets, and driveways, are primarily made of gypsum. Chalk is a source of quicklime by thermal decomposition, or slaked lime following quenching of quicklime with water. In southeast England, deneholes are a notable example of ancient chalk pits. Such bell pits may also mark the sites of ancient flint mines,
The Chalk Garden " 'The Chalk Garden' is extraordinarily modern for a high comedy set in the drawing room of a stuffy Sussex manor house: its plot and structure are elliptical; its witty lines aren't brittle but are instead redolent with what the author calls 'the shape and shadow of life.'... Bagnold's play is in part a journey to the bottom of Miss Madrigal's identity; it is also about the effect the woman has on her employer's household. Mrs. St. Maugham is a selfish, eccentric paragon of privilege who spends her days gardening but can't make anything grow." The Chalk Garden The Chalk