ored inks may be easily produced, and have been used. In all these the color- ing matter desired is held in suspension by thicken- Writing; ink. ing the liquid with gum-arabic. The boasted power that has been proverbially ascribed to the pen, should, in fairness, be shared OLMSTED'S SPRING-TOP… … execution of documents, that may be required to be Patented through the Scientific American Patent legible fifty ov a hundred years hence. Agency Sept. 4, 1866, by Alfred Woodworth. when the implement cannot reach the part to be In addition to Innumerable methods invented from For further…
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