The key is an instrument used to secure an opening through which food can be passed into the mouths of persons refusing to take nourishment; it is a circular plate of metal approx. 1/4" thick on which is a 1/2" opening; a T-shaped handle is attached.
The National Library of Medicine believes this item to be in the public domain. (More information)
Is part of: Observations on the causes, symptoms, and treatment of derangement of the mind.; See related catalog record: 66510380R