Specification of John Howard Kyan
Subtitle: preserving vegetable substances
Publisher: Great Seal Patent Office
Published: 1855
Place of publication: London
Language: eng
Subjects: Food preservatives; Vegetables; Wood; Food Preservation; Mercury
Notes: At head of title: A.D. 1832. No. 6253.

"John Howard Kyan, late of South Row, Euston Square, but now of Gillingham Street, in the County of Middlesex."