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Credit
Secrets de la polygraphie. Vingt-quatre secrets. Public Domain Mark. Source: Wellcome Collection.
Provider
Wellcome Library; GB.
The first section (6 ll.) is a short work on cryptography; followed by a collection of mechanical and other tricks and semi-scientific processes; it includes some medical receipts, etc. There are a few veterinary receipts at the end.
| Location | Status | Access | |
|---|---|---|---|
Closed stores MS.740 |