Category Archives: Research

How to remove Google watermarks from Public Domain scans

First, to be clear I am in no way trying criticize Google or insinuate that somehow the “Digitized by Google” watermarks are inappropriate or unethical. Maybe unnecessary though. Certainly, I’m most appreciative of Google’s funding for digitization, their hosting and providing free access to, their contribution to archive.org and the providing of searchable metadata through […]

File-making section from The Circle of Mechanical Arts

From the File-Making section of Circle of the Mechanical Arts: PDF: circle-of-the-mechanical-arts_file-section_re-set   We shall introduce this article with some admirable observations on the progress of mechanical discovery, exemplified in an account of machines for cutting files, by Mr. Wm. Nicholson. “The folly and consequent distress of pursuing experiments in chemistry, for the sole purpose of […]