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| | Etherington & Roberts. Dictionary--ink (Site not responding. Last check: 2007-10-21) |
 | | Carbon ink would not adhere to the greasy surface of a material such as parchment, and, in any case, it was too easily removed by sponging. |
 | | Carbon inks, however, continued to be used for documents, probably until the advent of the "blue-fl" ink period. |
 | | Most modern inks are manufactured to overcome one or more of the disadvantages inherent in blue-fl inks, including their acidity, muddiness, and less than adequate permanence. |
| palimpsest.stanford.edu /don/dt/dt1849.html (385 words) |
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