A large tank (like a Wardian case that fern collectors use). It is filled with a bubbling orange liquid that is being "aerated" with a colorless and odorless gas.
To hold the body of a ghost for preservation purposes.
- Genevieve Lefoux used a similar tank for the preservation of her aunt.
- The device is installed aboard the Spotted Custard in preparation for Floote’s passing and was commissioned by Lord Akeldama.
- The tank was used for a purpose other than as originally designed, to transport Lord Maccon safely via dirigible from London to Egypt.