![]() In the sixteenth century, the Italian scientist Giovanni Porta described how to conceal a message within a hard-boiled egg by making an ink from a mixture of one ounce of alum and a pint of vinegar. The messenger would then swallow the ball of wax. #4 The ancient Chinese wrote messages on fine silk, which was then scrunched into a tiny ball and covered in wax. The long-running feud between Greece and Persia reached a crisis soon after Xerxes began constructing a city at Persepolis, the new capital for his kingdom. ![]() #3 The art of secret writing was used to save Greece from being conquered by the Persians in 480 B. In his first book since the bestselling Fermats Enigma, Simon Singh offers the first sweeping history of encryption, tracing its evolution and revealing the dramatic effects codes have had on wars, nations, and individual lives. The challenge for him was to demonstrate a link between Mary and the plotters. #2 The plot to kill Elizabeth and replace her with Mary, a fellow Catholic, was discovered by Walsingham, the principal secretary. Sir Francis Walsingham, Elizabeth’s Principal Secretary, planned to prove that Mary was at the heart of the plot, and was therefore equally culpable and deserving of death. ![]() She had been accused of plotting to assassinate Queen Elizabeth in order to take the English crown for herself. Sample Book Insights: #1 On October 15, 1586, Queen Mary of Scots was on trial for treason. ![]() Please note: This is a companion version & not the original book. ![]()
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