A deathstill is a fictional water reclamation and conservation device from the novel Dune by Frank Herbert. On the desert planet Arrakis, also known as Dune, water is a precious commodity, and an individual's death cannot stand in the way of its conservation. The "Fremen", the desert survivalists of Dune, place remains, human and animal, in the deathstill and all the water is extracted from the corpse and retained in a communal resevoir. The deathstill is capable of extracting moisture from a subject whether they are alive or not; this is evidenced in Children of Dune, when the device is used as a method of execution. Dune is a science fiction novel written by Frank Herbert and published in 1965. ... Frank Herbert (1920 - 1986) Frank Patrick Herbert (October 8, 1920 â February 11, 1986) was a critically and commercially successful American science fiction author. ... Arrakis, (derived from the Arabic name ar-raqiÅ, the dancer. ... The Fremen are a group of people in the Dune series of science fiction novels by Frank Herbert. ... Children of Dune Children of Dune is a science fiction novel by Frank Herbert, third in a series of six novels set in the Dune universe. ...
Water is collected from the atmosphere in windtraps that condense the humidity and add it to the underground water store.
Water can also be collected from dead animals and people (especially outside wanderers) and processed in a deathstill which removes the water from the carcass for addition to the sietch water store.
The Fremen that caused or discovered the death of the animal or person is then given a set of water rings whose markings denote a volume of water equal to the amount of water collected.