Specification of John William Slater : treating sewage.

  • Slater, John William.
Date:
1876
Catalogue details

Licence: Public Domain Mark

Credit: Specification of John William Slater : treating sewage. Source: Wellcome Collection.

    7/12 (page 5)
    Slater's Improvements in Treating Sewage. purifying the said gases, as herein-before described, so as to obtain therefrom ammonia, illuminating gas, and other useful products. In witness whereof, I, the said John William Slater, have here¬ unto set my hand and seal, this Twenty-first day of April, in 5 the year of our Lord One thousand eight hundred and seventy- six. Witness, H. H. Murdoch, 20 Staple Inn, London. J. W. SLATER, (l.s.) LONDON: Printed by George Edward Eyre and William Spottiswoodb, Printers to the Queen’s most Excellent Majesty. 1876.