Young's Demonstrative Translation of Scientific Secrets by Daniel Young
page 22 of 236 (09%)
page 22 of 236 (09%)
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38. INDELIBLE INK
1 inch of the stick of the nitrate of silver dissolved in a little water, and stirred into each gallon of the above, makes first rate indelible ink for cloth. Judge what indelible ink costs. 39. INDELIBLE INK Nitrate of silver 1-1/2 oz., dissolved in liquor ammonia fortisine 5-1/2 oz., orchil for colouring 3/4 oz., gum mucilage 12 oz., mix the two latter, then mix them with the two former, and it is ready to use. 40. WRITING FLUID OR BLACK COPYING INK Take two gallons of rain water and put into it gum arabic 1/4 lb., brown sugar 1/4 lb., clean copperas 1/4 lb., powdered nut galls 3/4 lb., mix and shake occasionally for ten days and strain. If needed sooner, let it stand in an iron kettle until the strength is obtained. This ink can be depended on for deeds or records, which you may want someone to read hundreds of years to come. Oexylic acid 1/4 oz., was formerly put in, but as it destroys the steel pens, and does just as well without it--it is now never used. 41. BEST INK POWDER This is formed of the dry ingredients for ink, powdered and mixed. |
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