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Invisible Ink

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Invisible Ink

John Cotgrave. Wits interpreter, the English Parnassus. London, 1655. 

If you enjoyed writing a secret code, you might also enjoy writing a note that was completely secret. To write with invisible ink, try the directions in a Folger manuscript from 1600:

Squeeze the juice out of a fresh lemon into a small bowl. Dip a quill pen or other pointed object into the juice and write your message on plain paper with it. Let the paper dry. To read the message, (have an adult) hold the paper near a flame (or any other source of heat, like a light bulb.) The message will appear as if by magic!

To go on to the next activity, click here.

Writing tables. London, 1604.

New booke, containing all sortes of handes usually written at this daie. London, 1611 (Detail)

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