Specification of Henry Matthews
Subtitle: removing and consuming sewer gas
Publisher: Great Seal Patent Office
Published: 1875
Place of publication: London
Language: eng
Subjects: Sewer gas; Sewage; Sewerage
Notes: Cover title.

At head of title: A.D. 1874, 10th November. No. 3868.

"Henry Matthews, of Rowallan Villa, Cotham Brow, Bristol, in the county of Gloucester"