9/22/10

Näkymätöntä mustetta

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"In October he noted that he "heard from C that the best invisible ink is semen", which did not react to the main methods of detection. Furthermore it had the advantage of being readily available.

A member of staff close to "C", Frank Stagg, said that he would never forget his bosses' delight when the Deputy Chief Censor said one day that one of his staff had found out that "semen would not react to iodine vapour".

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