optics, and in every other coarse emery wheel. discovery may be understood when it is known that in branch of scientific and practical work, great advances Fig. 3 shows the same tool ground upon an emery the first ten years following the introduction of the ar- have been made, so that the highest… … perfect, and would not be benefited in the least in the manufacture of printing inks, and would advise any one with a turn for chemistry to by the application to it of a file or any abrading reached only by the employment of all available means material. investigate this subject. It is only a few…
Patented · Patents · Munn · Scientific American · Steel · Steel rails · Sewing machine · Address munn · Wrought iron · Years ago · Wood working · Lead bath · Magnetic field · Postal order
Internet Archive · Public domain (published before 1931). Free to use for anything.
