Specification of William Henry Hughan
Subtitle: treating sewage, &c
Publisher: Great Seal Patent Office
Published: 1870
Place of publication: London
Language: eng
Number of pages: 12
Subjects: Sewage; Manures; Deodorization
Notes: Cover title.

At head of title: A.D. 1870, 8th January. No.67.

"William Henry Hughan, of Newton Stewart, North Britain, postmaster and guano and seed merchant".