Specification of Ludwig Schad
Subtitle: treating excrement
Publisher: Great Seal Patent Office
Published: 1870
Place of publication: London
Language: eng
Subjects: Sewage; Disinfection and disinfectants; Toilets; Salt
Notes: Cover title.

At head of title: A.D. 1870, 26th April. No. 1200.

"Ludwig Schad, of Warrington, in the county of Lancaster, chemist".