Talk:Saladin box

To fix
Still open questions: Martijn Hoekstra (talk) 15:59, 21 January 2012 (UTC)
 * when was this design popular? How often was it used? when did it get in disuse?
 * are box germination designs with perforated floors still considered Saladin boxes or not?
 * are boxes with electrically driven screws still Saladin boxes?
 * are round vessels with rotating arms of screws still Saladin boxes?