How to make inventions; or, Inventing as a science and an art (1893)
Thompson, Edward P · New York, D. Van Nostrand co · leaf 145
in a severelycritical and analytical manner. He found that the pressure uponthe letters had squeezed out some of the colored sap, whichstuck to the parchment at all points of contact of the same withthe letters. Was this an invention ? No. He no more had aninvention than the boy who first saw the… … 131 He learned a fact that a bark letter containing moist sap pressedupon a surface of parchment paper left an imprint. This wasknowledge, not an invention. He had been for a long time try-ing to solve the problem of multiplication of letters and wordsupon parchment. His idea consisted in putting…
Inventions
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![An illustration from Banbury chap books and nursery toy book literature [of the XVIII and early XIX centuries] (1890)](https://img.insideoutlibrary.com/img/200/ia-banburychapbooks00pearrich-99-305.webp)
